IBM has a simple vision: "Make the world work better". At SoftLayer, we play an important role in that vision: We're building the world a place to work.
SoftLayer Engineering takes great ideas and turns them into valuable and innovative cloud services. We chart careful courses and forecast advances in technology by incorporating our customers, their needs and desires, into both our planning and the products we offer them. And we use our own platform relentlessly so we can be our harshest critics.
Ultimately, our mission is simple: "Be the de facto platform on the Internet for cloud-based services".
SoftLayer Labs is the engine that carries fuzzy ideas and big dreams down the path to realization. We take projects requiring a great deal of synthesis and construct living proofs-of-concept. From there, we line them up with our business and technology strategies, determine whether they can fulfill the demands of our customers, and give our business leaders the power to make key decisions.
We’re building our platform as a blended solution of different technologies. Its design incorporates a collection of compute, network, storage, and software for mixing-and-matching services. Whether its Virtual Servers, Bare Metal, Block Storage, Private Clouds, or Load Balancing, our platform delivers unmatched scalability and control.
Development begins with simple problems; a persistent itch that must be scratched. We explore ideas to scratch that itch by applying strategies that transform them into solutions. Further downstream, we rope in other teams, commit to significant milestones, and groom the project for productization as we ramp-up for a full-blown new product launch.
SoftLayer's Engineering and Operations team stands on the fringes of technology. We survey the chaos beyond the boundaries, chart new directions, carve new pathways, lay foundations, connect the plumbing, and power up new spaces our customers need. We accomplish this with innovative and powerful tools of our own design.
SoftLayer's approach to offering a global infrastructure inspired us to come up with a more efficient design: a low-latency, high-bandwidth network for running cloud services on a globally distributed system. Our engineers push the boundaries of what's possible by utilizing the global high-performance network, and what we have today is the vertebrae for building highly-available systems with more reliability and better performance compared to alternative systems.
Our cloud infrastructure harnesses a modular architecture with unparalleled scalability and control. This includes a full-featured API and sophisticated automation to control a flexible unified platform that spans physical and virtual devices. Using a combination of quality, feature development, and partnerships, we continuously strive to manage and optimize our core infrastructure for the long-run.
Working at the intersection where technology and business meet means we hunt for new contemporary advances day-in and day-out. Always on the front-line of SoftLayer’s charge toward innovation, our Engineering and Operation team revolutionizes our technological growth and efficiencies through the use of incremental development and convergences. This includes advances in computing, cognitive science, storage, intelligent agents, and more.
Our combustion began at the grassroots level with free, open source software. Not only do we use it, we’re also firm believers in using open development and collaboration to make viable and sustainable products. Contributing back to the open source community allows us to work with a number of creative individuals and keep an eye on what's trending. To date, we have active open source projects on GitHub.
With open source at the helm of SoftLayer's community development, we're pumping out a lot of great projects with help from our contributors.
For example, Jumpgate, a simple library for making clouds OpenStack-compatible, interfaces with every endpoint on the OpenStack API and shuffles data between the two. Our Knife-SoftLayer plugin lets you launch, bootstrap, and manage compute instances in the cloud. And then there's Python CLI. This little beauty gives you the facilities to spin-up virtual servers and provides seamless access to SoftLayer environments without having to grapple with APIs.
Take a look at our projects on GitHub and contribute wherever you can make an impact.
Our workflow follows the fork-pull model and we leverage issues and pull requests for source control, bug fixes, and new feature development. Anyone is welcome to submit a request. All we ask is that you follow the Contributing Guidelines posted under each of our GitHub repositories.
We license our code and documentation under the terms of the MIT license. By contributing to any project, you're allowing us to distribute your contribution under the terms of this license.
How are your skills being utilized today? How often do you get to learn about things that interest you? At SoftLayer, we're committed to finding a middle-ground for both your skills and interests.
Every day, our talented folks are doing things that improve their skills, our company, and ultimately the cloud. In our fast-paced industry, every person has the opportunity to:
We're growing at an extraordinary rate and looking eagerly to recruit top-talent in the fields of software architecture, software engineering, DevOps, and more. Join us!
Our architects are big-picture thinkers and play a pivotal role as bridge-builders between technology and management. More than just great software engineers, they make vital decisions that drive our business forward technologically and are responsible for curating the fundamental blocks of our platform.
Click here for a listing of open Software Architect positions at SoftLayer.
Our development cycle is extremely fast, and we’ve built our platform to keep it that way. It’s common to write code and have it running live a few days later. This comes as a pleasant surprise to engineers who have worked at other companies where code takes months or years to see the light of day. If you work with us, you'll be able to make an immediate impact.
Click here for a listing of open Software Engineering positions at SoftLayer.
These battle-tested, elite individuals blend the skills of Operations with the technical chops to build solutions. Their talents span all aspects of system administration and engineering—including automation, hardware, operating systems, virtualization, networking, storage and security.
Click here for a listing of open DevOps Engineering positions at SoftLayer.


--- title: Automated Techniques for Software Reliability ref: atsr2012 description: Graduate course on program analysis techniques for software reliability and security. semester: Fall 2012 number: 263-2910-00L lecturer: Martin Vechev ta: Veselin Raychev assistants: edoz: http://www.vvz.ethz.ch/Vorlesungsverzeichnis/lerneinheitPre.do?lerneinheitId=81107&semkez=2012W&lang=en session-time-place: lecture-time-place: Wed 9-11, CAB G56 exercise-time-place: credits: 4 image: ---
The last 10 years have seen an explosion in techniques for automated program analysis. These techniques have enabled a vast range of interesting applications: from ensuring correctness of complex algorithms to finding security violations in mobile applications and even to code synthesis.
This course will cover the core principles behind these automated techniques including static and dynamic program analysis, symbolic execution, predicate abstraction, pointer analysis as well as practical analysis frameworks such as Soot.
To gain a deeper understanding of how to apply these techniques in practice, the course will involve a small hands-on programming project where based on the principles introduced in class, the students will build a program analyzer for a modern programming language.


SnowMan Game
Guess the word before the SnowMan runs out of time to land his trick!
already guessed
choose your next move
use this vocabDef to help you guess the trick name
scoreboard
jumps survived
jumps survived
jumps crashed
jumps survived
lives left
jumps survived


Orienter classes (docstrings)¶
Orienter¶
AxisOrienter¶
-
class
sympy.vector.orienters.
AxisOrienter
(angle, axis)[source]¶ Class to denote an axis orienter.
-
__init__
(angle, axis)[source]¶ Axis rotation is a rotation about an arbitrary axis by some angle. The angle is supplied as a SymPy expr scalar, and the axis is supplied as a Vector.
Parameters: angle : Expr
The angle by which the new system is to be rotated
axis : Vector
The axis around which the rotation has to be performed
Examples
>>> from sympy.vector import CoordSysCartesian >>> from sympy import symbols >>> q1 = symbols('q1') >>> N = CoordSysCartesian('N') >>> from sympy.vector import AxisOrienter >>> orienter = AxisOrienter(q1, N.i + 2 * N.j) >>> B = N.orient_new('B', (orienter, ))
-
BodyOrienter¶
-
class
sympy.vector.orienters.
BodyOrienter
(angle1, angle2, angle3, rot_order)[source]¶ Class to denote a body-orienter.
-
__init__
(angle1, angle2, angle3, rot_order)[source]¶ Body orientation takes this coordinate system through three successive simple rotations.
Body fixed rotations include both Euler Angles and Tait-Bryan Angles, see http://en.wikipedia.org/wiki/Euler_angles.
Parameters: angle1, angle2, angle3 : Expr
Three successive angles to rotate the coordinate system by
rotation_order : string
String defining the order of axes for rotation
Examples
>>> from sympy.vector import CoordSysCartesian, BodyOrienter >>> from sympy import symbols >>> q1, q2, q3 = symbols('q1 q2 q3') >>> N = CoordSysCartesian('N')
A ‘Body’ fixed rotation is described by three angles and three body-fixed rotation axes. To orient a coordinate system D with respect to N, each sequential rotation is always about the orthogonal unit vectors fixed to D. For example, a ‘123’ rotation will specify rotations about N.i, then D.j, then D.k. (Initially, D.i is same as N.i) Therefore,
>>> body_orienter = BodyOrienter(q1, q2, q3, '123') >>> D = N.orient_new('D', (body_orienter, ))
is same as
>>> from sympy.vector import AxisOrienter >>> axis_orienter1 = AxisOrienter(q1, N.i) >>> D = N.orient_new('D', (axis_orienter1, )) >>> axis_orienter2 = AxisOrienter(q2, D.j) >>> D = D.orient_new('D', (axis_orienter2, )) >>> axis_orienter3 = AxisOrienter(q3, D.k) >>> D = D.orient_new('D', (axis_orienter3, ))
Acceptable rotation orders are of length 3, expressed in XYZ or 123, and cannot have a rotation about about an axis twice in a row.
>>> body_orienter1 = BodyOrienter(q1, q2, q3, '123') >>> body_orienter2 = BodyOrienter(q1, q2, 0, 'ZXZ') >>> body_orienter3 = BodyOrienter(0, 0, 0, 'XYX')
-
SpaceOrienter¶
-
class
sympy.vector.orienters.
SpaceOrienter
(angle1, angle2, angle3, rot_order)[source]¶ Class to denote a space-orienter.
-
__init__
(angle1, angle2, angle3, rot_order)[source]¶ Space rotation is similar to Body rotation, but the rotations are applied in the opposite order.
Parameters: angle1, angle2, angle3 : Expr
Three successive angles to rotate the coordinate system by
rotation_order : string
String defining the order of axes for rotation
See also
BodyOrienter
- Orienter to orient systems wrt Euler angles.
Examples
>>> from sympy.vector import CoordSysCartesian, SpaceOrienter >>> from sympy import symbols >>> q1, q2, q3 = symbols('q1 q2 q3') >>> N = CoordSysCartesian('N')
To orient a coordinate system D with respect to N, each sequential rotation is always about N’s orthogonal unit vectors. For example, a ‘123’ rotation will specify rotations about N.i, then N.j, then N.k. Therefore,
>>> space_orienter = SpaceOrienter(q1, q2, q3, '312') >>> D = N.orient_new('D', (space_orienter, ))
is same as
>>> from sympy.vector import AxisOrienter >>> axis_orienter1 = AxisOrienter(q1, N.i) >>> B = N.orient_new('B', (axis_orienter1, )) >>> axis_orienter2 = AxisOrienter(q2, N.j) >>> C = B.orient_new('C', (axis_orienter2, )) >>> axis_orienter3 = AxisOrienter(q3, N.k) >>> D = C.orient_new('C', (axis_orienter3, ))
-
QuaternionOrienter¶
-
class
sympy.vector.orienters.
QuaternionOrienter
(angle1, angle2, angle3, rot_order)[source]¶ Class to denote a quaternion-orienter.
-
__init__
(angle1, angle2, angle3, rot_order)[source]¶ Quaternion orientation orients the new CoordSysCartesian with Quaternions, defined as a finite rotation about lambda, a unit vector, by some amount theta.
This orientation is described by four parameters:
q0 = cos(theta/2)
q1 = lambda_x sin(theta/2)
q2 = lambda_y sin(theta/2)
q3 = lambda_z sin(theta/2)
Quaternion does not take in a rotation order.
Parameters: q0, q1, q2, q3 : Expr
The quaternions to rotate the coordinate system by
Examples
>>> from sympy.vector import CoordSysCartesian >>> from sympy import symbols >>> q0, q1, q2, q3 = symbols('q0 q1 q2 q3') >>> N = CoordSysCartesian('N') >>> from sympy.vector import QuaternionOrienter >>> q_orienter = QuaternionOrienter(q0, q1, q2, q3) >>> B = N.orient_new('B', (q_orienter, ))
-


{{mysfit.name}}
Species: {{mysfit.species}}
Age: {{mysfit.age}}
Good/Evil: {{mysfit.goodevil}}
Lawful/Chaotic: {{mysfit.lawchaos}}
This site was created for use in the AWS Modern Application Workshop. Please see details here.


NUM
: numeral
Definition
A numeral is a word, functioning most typically as a determiner, adjective or pronoun, that expresses a number and a relation to the number, such as quantity, sequence, frequency or fraction.
 Other words functioning as determiners (including quantifiers
such as many and few) are tagged DET.
In Bultreebank tagset the tag which maps to NUM
, is Mc#
.
Examples
- 0, 1, 2, 3, 4, 5, 2014, 1000000, 3.14159265359
- едно, две, три, седемдесет и седем / edno, dve, tri, sedemdeset i sedem “one, two, three, seventy-seven”
- I, II, III, IV, V, MMXIV
Note that the symbol `#’, used in the Universal POS section indicates a holder for arbitrary number of features, suppressed in the respective tag as irrelevant in the BulTreeBank tagset, when mapped to the Universal one.
Treebank Statistics (UD_Bulgarian)
There are 385 NUM
lemmas (3%), 420 NUM
types (2%) and 1883 NUM
tokens (1%).
Out of 16 observed tags, the rank of NUM
is: 6 in number of lemmas, 6 in number of types and 12 in number of tokens.
The 10 most frequent NUM
lemmas: два, един, три, двама, четири, 10, шест, двадесет, тридесет, 000
The 10 most frequent NUM
types: две, един, 2, два, една, 1, 3, три, едно, 10
The 10 most frequent ambiguous lemmas: един (DET 220, NUM 204, PRON 6), 10 (NUM 39, ADJ 9), 15 (NUM 27, ADJ 11), 5 (NUM 23, ADJ 6), 12 (NUM 15, ADJ 4), 21 (NUM 15, ADJ 1), 11 (NUM 12, ADJ 1), 25 (NUM 12, ADJ 2), 16 (NUM 11, ADJ 3), 18 (NUM 11, ADJ 1)
The 10 most frequent ambiguous types: един (DET 77, NUM 55, PRON 1), 2 (NUM 57, ADJ 3, PROPN 1), една (DET 70, NUM 45), 1 (NUM 46, ADJ 27, PROPN 1), 3 (NUM 45, ADJ 5), едно (NUM 39, DET 38, PRON 2), 10 (NUM 39, ADJ 9), 20 (NUM 34, ADJ 4), 4 (NUM 28, ADJ 3), 15 (NUM 27, ADJ 11)
- един
- 2
- една
- 1
- 3
- едно
- 10
- 20
- 4
- 15
Morphology
The form / lemma ratio of NUM
is 1.090909 (the average of all parts of speech is 1.709615).
The 1st highest number of forms (7) was observed with the lemma “един”: 1, Единият, един, една, едната, едно, едното.
The 2nd highest number of forms (5) was observed with the lemma “два”: 2, два, двата, две, двете.
The 3rd highest number of forms (4) was observed with the lemma “четирима”: 4-има, 4-ма, четирима, четиримата.
NUM
occurs with 5 features: bg-feat/NumType (1883; 100% instances), bg-feat/Definite (1880; 100% instances), bg-feat/Number (1880; 100% instances), bg-feat/Gender (464; 25% instances), bg-feat/Animacy (8; 0% instances)
NUM
occurs with 10 feature-value pairs: Animacy=Anim
, Definite=Def
, Definite=Ind
, Gender=Fem
, Gender=Masc
, Gender=Neut
, NumType=Card
, NumType=Ord
, Number=Plur
, Number=Sing
NUM
occurs with 17 feature combinations.
The most frequent feature combination is Definite=Ind|Number=Plur|NumType=Card
(1331 tokens).
Examples: 3, три, 10, 20, 000, 4, 15, 30, 6, двама
Relations
NUM
nodes are attached to their parents using 18 different relations: bg-dep/nummod (1559; 83% instances), bg-dep/nmod (93; 5% instances), bg-dep/nsubj (55; 3% instances), bg-dep/flat (45; 2% instances), bg-dep/conj (30; 2% instances), bg-dep/obl (23; 1% instances), bg-dep/obj (20; 1% instances), bg-dep/iobj (18; 1% instances), bg-dep/nsubj:pass (13; 1% instances), bg-dep/root (13; 1% instances), bg-dep/appos (3; 0% instances), bg-dep/ccomp (3; 0% instances), bg-dep/csubj (2; 0% instances), bg-dep/parataxis (2; 0% instances), bg-dep/acl (1; 0% instances), bg-dep/discourse (1; 0% instances), bg-dep/fixed (1; 0% instances), bg-dep/xcomp (1; 0% instances)
Parents of NUM
nodes belong to 8 different parts of speech: NOUN (1595; 85% instances), VERB (128; 7% instances), NUM (99; 5% instances), PROPN (39; 2% instances), ROOT (13; 1% instances), ADJ (3; 0% instances), ADV (3; 0% instances), PRON (3; 0% instances)
1518 (81%) NUM
nodes are leaves.
259 (14%) NUM
nodes have one child.
62 (3%) NUM
nodes have two children.
44 (2%) NUM
nodes have three or more children.
The highest child degree of a NUM
node is 7.
Children of NUM
nodes are attached using 17 different relations: bg-dep/case (132; 24% instances), bg-dep/nmod (110; 20% instances), bg-dep/advmod (90; 16% instances), bg-dep/punct (51; 9% instances), bg-dep/flat (46; 8% instances), bg-dep/conj (33; 6% instances), bg-dep/cc (24; 4% instances), bg-dep/cop (22; 4% instances), bg-dep/nsubj (21; 4% instances), bg-dep/det (7; 1% instances), bg-dep/amod (6; 1% instances), bg-dep/acl (5; 1% instances), bg-dep/mark (5; 1% instances), bg-dep/compound (2; 0% instances), bg-dep/obl (2; 0% instances), bg-dep/advcl (1; 0% instances), bg-dep/aux (1; 0% instances)
Children of NUM
nodes belong to 15 different parts of speech: ADP (167; 30% instances), NUM (99; 18% instances), NOUN (81; 15% instances), PUNCT (51; 9% instances), ADV (42; 8% instances), CCONJ (24; 4% instances), AUX (23; 4% instances), ADJ (21; 4% instances), PRON (17; 3% instances), PART (11; 2% instances), VERB (9; 2% instances), SCONJ (6; 1% instances), PROPN (4; 1% instances), INTJ (2; 0% instances), DET (1; 0% instances)
NUM in other languages: [am] [ar] [bg] [bxr] [ca] [ckb] [cop] [cs] [cu] [da] [de] [el] [en] [es] [et] [eu] [fa] [fi] [fo] [fr] [ga] [gl] [got] [grc] [he] [hi] [hr] [hu] [id] [it] [ja] [kk] [kmr] [ko] [la] [lv] [mr] [nl] [no] [pl] [pt] [ro] [ru] [sa] [sk] [sla] [sl] [so] [sr] [sv] [swl] [ta] [tr] [ug] [uk] [u] [urj] [ur] [vi] [yue] [zh]


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Home
PIO dev
PWM dev
ADC-DAC dev
About
Test Lua CGI
ADC-DAC Test
Loading..
ext ADCs:
ADC 0 (0) =
50.0%
ADC 1 (1) =
50.0%
ADC 2 (2) =
50.0%
ADC 3 (3) =
50.0%
int ADC:
int ADC (-3) =
50.0%
DAC:
DAC (-2) =
50.0%


Articulation Agreement by Major
Effective during the 16-17 Academic Year
====Sociology====
Lower Division Major Requirements
--------------------------------------------------------------------------------
SOC 1008 Introduction to Sociology (3)|SOC 101 Introduction to (3)
| Sociology
GE Area D
--------------------------------------------------------------------------------
SOC 2018 Self and Society (3)|No Course Articulated
GE Area: SELF Requirement
--------------------------------------------------------------------------------
SOC 2208 Introduction to (3)|No Course Articulated
Statistics in the Social |
Sciences |
OR |
MATH 1209 Statistics in the Modern (3)|MATH 100 The Nature of Modern (3)
World | Mathematics
| OR
|MATH 123 Elementary Statistics (4)
Ge Area A: A4
--------------------------------------------------------------------------------
SOC 2210 Intro to Research Methods (3)|SOC 104 Social Science Research (3)
| Methods
--------------------------------------------------------------------------------
SOC 2300 Race and Ethnic Relations (3)|No Course Articulated
OR |
SOC 2400 Sex and Gender Issues (3)|No Course Articulated
--------------------------------------------------------------------------------
Select one (1) of the community college |SOC 102 Social Problems (3)
courses to receive lower division |
Sociology major elective credit. |
| OR
|SOC 110 Introduction to (3)
| Marriage and Family
| OR
|SOC 120 Race and Ethnic (3)
| Relations
--------------------------------------------------------------------------------
Students majoring in Sociology with a Concentration in Human Services are
required to complete the following courses:
--------------------------------------------------------------------------------
SOC 1008 Introduction to Sociology (3)|SOC 101 Introduction to (3)
| Sociology
GE Area D
--------------------------------------------------------------------------------
SOC 2018 Self and Society (3)|No Course Articulated
GE Area: SELF Requirement
--------------------------------------------------------------------------------
SOC 2208 Introduction to (3)|No Course Articulated
Statistics in the Social |
Sciences |
OR |
MATH 1209 Statistics in the Modern (3)|MATH 100 The Nature of Modern (3)
World | Mathematics
| OR
|MATH 123 Elementary Statistics (4)
Ge Area A: A4
--------------------------------------------------------------------------------
SOC 2210 Intro to Research Methods (3)|SOC 104 Social Science Research (3)
| Methods
--------------------------------------------------------------------------------
SOC 2300 Race and Ethnic Relations (3)|No Course Articulated
OR |
SOC 2400 Sex and Gender Issues (3)|No Course Articulated
--------------------------------------------------------------------------------
Students majoring in Sociology with a Concentration in Ethnic Studies are
required to complete the following courses
--------------------------------------------------------------------------------
SOC 1008 Introduction to Sociology (3)|SOC 101 Introduction to (3)
| Sociology
GE Area D
--------------------------------------------------------------------------------
SOC 2018 Self and Society (3)|No Course Articulated
GE Area: SELF Requirement
--------------------------------------------------------------------------------
SOC 2208 Introduction to (3)|No Course Articulated
Statistics in the Social |
Sciences |
OR |
MATH 1209 Statistics in the Modern (3)|MATH 100 The Nature of Modern (3)
World | Mathematics
| OR
|MATH 123 Elementary Statistics (4)
Ge Area A: A4
--------------------------------------------------------------------------------
SOC 2210 Intro to Research Methods (3)|SOC 104 Social Science Research (3)
| Methods
--------------------------------------------------------------------------------
SOC 2300 Race and Ethnic Relations (3)|No Course Articulated
OR |
SOC 2400 Sex and Gender Issues (3)|No Course Articulated
--------------------------------------------------------------------------------
END OF MAJOR


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Our Awesome Team.
Codefest Lovers.
John Herrlin
Robin Karlsson
Andreas Lundahl
2015


This is a test of a block quote With just two lines
A paragraph
This is a more difficult case With a list item inside the quote Alpha Beta Etc.
This is a more difficult case With a list item inside the quote


“Andhohaṁ hatanettosmi,
kantāraddhānapakkhando;
Sayamānopi gacchissaṁ,
na sahāyena pāpenā”ti.
… Cakkhupālo thero ….

Even if I have to crawl I’ll keep going—
though not with wicked companions.


libcdx: Interfaces to the Channel Data Exchange (CDX) File Format
C++, Python, and Matlab library to exchange data for radio propagation channels
Modules
Here is a list of all modules:
[detail level
1
2
]
C++ Implementation of the CDX Interface
Python Implementation of the CDX Interface
Matlab Implementation of the CDX Interface
▼
CDX Tools written in C++
cdx-convert-continuous-to-discrete
▼
CDX Tools written in Python
cdx-compute-multipath-spread-and-energy
cdx-compute-multipath-to-line-of-sight-components-power-ratio
cdx-compute-power-delay-profile
cdx-display
cdx-plot-discrete-delay-file
▼
CDX Tools written in Matlab
convert_continuous_to_discrete_delay
plot_continuous_delay_cir_file
plot_discrete_delay_cir_file
▼
Matlab Examples
create_new_hdf5_file_continuous_delay
▼
Python Examples
example_01
write-cdx-file
▼
Cpp_examples
example_01
Generated on Fri Jan 12 2018 16:26:56 for libcdx: Interfaces to the Channel Data Exchange (CDX) File Format by
1.8.13


It's Beginning to Look a Lot Like...Halloween in FX's Spooky New Take on A Christmas Carol
by Cheryl EddyThe lyrics for beloved Christmas song “It’s the Most Wonderful Time of the Year” very clearly affirm that “scary ghost stories” are just as much a part of the holiday season as “mistletoeing.” And if FX’s spin on the oft-adapted Dickens classic wants to lean into its horror elements, we are all for it.
Guy Pearce stars as Scrooge (other cast members include Andy Serkis and What We Do in the Shadows’ Kayvan Novak) in what is most definitely a dark, dark take on A Christmas Carol, with Ridley Scott and Tom Hardy among its producers. Steven Knight (Locke, Serenity) directs. Check out this grim-as-hell trailer:
“This is the place where Christmas comes to die,” indeed. A Christmas Carol premieres December 19 on FX.
For more, make sure you’re following us on our Instagram @ io9dotcom .


Working with JavaScript numbers and dates
Doing math and working with dates can sometimes be challenging in programming.
I’ve been getting back into my JavaScript course on Udemy called “The Complete JavaScript Course 2022: From Zero to Expert”, in order to level up my skills. Here are some notes about numbers, dates, and methods we can use in JavaScript to work with numbers and dates.
 Acts just likeNumber()
Number.parseInt()
: if a string begins with a number(specifically an integer), it will return the number to you. Make sure you include the radix (or base, eg base 10, or base 2 (binary)).Number.parseFloat()
: if a string begins with a number(in this case, a floating point number, meaning it has a decimal), it will return the number to you, including what’s after the decimal.Number.isNaN()
: check if something is not a number. Remember that NaN is its own type of value, so you could even put a string into this method, and it will return false, because it is not NaN, it is a string.
Notes on NaN from MDN: NaN is returned when a math operation results in something we can’t represent or is undefined. It is also returned when we try to convert something into a number that can’t be. - Number("257abc")
returns NaN, since it can’t be turned into a number
Number.isFinite()
: another, better way to check if something is a floating point numberNumber.isInteger()
: to check if something is an integer, no decimal
Remainders
- use
%
to get the remainder of a division operation - good when you need to do something every nth time
- good to use when determining if a number is even or odd
- if you divide a number by 2, and the remainder is 0, the number is even. If the remainder is 1, the number is odd
Numeric separators
- use
_
to separate digits in a number, to make it easier to read - for example you can use them to separate by the thousands place
- 2,000,000 becomes 2_000_000
- JavaScript ignores the underscores
- cannot be placed:
- before or after a decimal point
- at beginning or end of number
- in a string that needs to be converted to a number - will result in NaN
BigInt
- there is a limit to the biggest number JavaScript can represent - the max safe integer
- 2 to the power of (53 -1)
- anything larger is unsafe
- BigInt can store these larger numbers
- add
n
to the end of your number - can also use BigInt function
- you can’t do operations that mix regular numbers and BigInt - make sure the regular number is converted to a BigInt before doing a calculation
//n
console.log(569875621352789786315346578967n);
//BigInt
console.log(BigInt(685789746533216578964321321234));
Dates
new Date()
gives you the current date and time- you can pass strings and numbers into the Date constructor and JavaScript will parse them
- unix timestamps (number of milliseconds since Jan 1 1970) can be passed into it as well
There are methods you can use on dates
getFullYear()
returns the yeargetMonth()
- returns as a number, remember it is 0 basedgetDate()
- returns the day of the monthgetDay()
- returns day of the week as a number also 0 based, starting on SundaygetHours()
getMinutes()
getSeconds()
toISOString()
- converts to a stringgetTime()
- returns unix timestamp in millisecondsDate.now()
- gives us the timestamp for right now
There are also “set” methods for all of the above, so you can update a date
Operations with dates
- you can convert a JavaScript date to a timestamp in milliseconds by converting it to a number
- if you wanted to subtract two dates, and return the number of days in between them, you’d need to divide them by a numerical value
1000 * 60 * 60 * 24
- converts milliseconds to seconds (1000), then to minutes (60), then hours (60), then days (24) - do these kinds of conversions depending on whether you want values in days, minutes, hours, etc
- if you need to do more complicated operations, can get a library like Moment.js
Internationalization API
Dates
Formatting with different languages:
- use
Intl.DateTimeFormat()
function to choose a language (locale), then.format()
to format the date according to the chosen language - this link gives a list of codes
- you can read more about this API on MDN here
const today = new Date();
label.textContent - new Intl.DateTimeFormat("en-GB").format(today);
- you can add an “options” object into the formatter to get the date and time, and format how you choose
- numeric gives a number, long gives you a string - see above MDN link for more options
const today = new Date();
const options = {
hour: "numeric",
minute: "numeric",
day: "numeric",
month: "long",
};
//pass options as an argument
label.textContent - new Intl.DateTimeFormat("en-GB", options).format(today);
- you can also get it from the user’s browser instead of setting it manually:
const locale = navigator.language
- this is ideal if you will have international users
Numbers
- use
Intl.NumberFormat().format()
to change number formatting based on location - eg. using commas vs decimal points as separators
- can also pass in an option object, where you can format units (like mph, temperature, percent, currency)
- have to set the currency in ‘options’, which you can’t get from locale alone
setTimeout and setInterval
setTimeout()
- first argument is a callback function, and the second argument is the amount of time to pass before running the function
- pass additional arguments (that your callback function needs) after the time argument
- line of code is read, JavaScript makes note of it and counts down the time in the background, while the rest of your code runs. JavaScript does NOT wait for setTimeout to finish before executing the rest of your code
- can use
clearTimeout()
to delete the timer in certain situations. You would assign your setTimeout function to a variable, then pass that variable intoclearTimeout()
setInterval()
- runs a callback function over and over, according to the timer interval you pass as an argument
- stop it using
clearInterval()


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dating_advice
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access_result.Rd
Methods for accessing specific elements of a Google API query.
access_result(res, result = c("instructions", "routes", "legs", "steps", "points", "polyline", "coordinates", "address", "address_components", "geo_place_id", "dist_origins", "dist_destinations", "elevation", "elev_location", "place", "place_name", "next_page", "place_location", "place_type", "place_hours", "place_open")) direction_instructions(res) direction_routes(res) direction_legs(res) direction_steps(res) direction_points(res) direction_polyline(res) distance_origins(res) distance_destinations(res) distance_elements(res) elevation(res) elevation_location(res) geocode_coordinates(res) geocode_address(res) geocode_address_components(res) geocode_place(res) geocode_type(res) place(res) place_next_page(res) place_name(res) place_location(res) place_type(res) place_hours(res) place_open(res) nearest_roads_coordinates(res)
| res | result from a Google API query |
|---|---|
| result | the specific field of the result you want to access |
direction_instructions
: the instructions from a directions query
direction_routes
: the routes from a directions query
direction_legs
: the legs from a directions query
direction_steps
: the steps from a directions query
direction_points
: the points from a directions query
direction_polyline
: the encoded polyline from a direction query
distance_origins
: the origin addresses from a distance query
distance_destinations
: the destination addresses from a distance query
distance_elements
: the element results from a distance query
elevation
: the elevation from an elevation query
elevation_location
: the elevation from an elevation query
geocode_coordinates
: the coordinates from a geocode or reverse geocode query
geocode_address
: the formatted address from a geocode or reverse geocode query
geocode_address_components
: the address components from a geocode or reverse geocode query
geocode_place
: the place id from a geocode or reverse geocode query
geocode_type
: the geocoded place types from a geocode or reverse geocode query
place
: the place_id from a places query
place_next_page
: the next page token from a places query
place_name
: the place name from a places query
place_location
: the location from a places query
place_type
: the type of place from a places query
place_hours
: the opening hours from a place details query
place_open
: the open now result from a place details query
nearest_roads_coordinates
: the coordinates from a nearest roads query
# NOT RUN { apiKey <- "your_api_key" ## results returned as a list (simplify == TRUE) lst <- google_directions(origin = c(-37.8179746,<PHONE_NUMBER>), destination = c(-37.81659, 144.9841), mode = "walking", key = apiKey, simplify = TRUE) ## results returned as raw JSON character vector js <- google_directions(origin = c(-37.8179746,<PHONE_NUMBER>), destination = c(-37.81659, 144.9841), mode = "walking", key = apiKey, simplify = FALSE) access_result(js, "polyline") direction_polyline(js) # }


China aims to reduce its dependence on America by 'decoupling' from the dollar, ANZ bank says, Business Insider - Business Insider Singapore
by Yusuf Khan, Business Insider US- China is trying to reduce its dependency on America by moving away from the dollar.
- According to ANZ economists, the Asian superpower upped its reserves of other foreign currencies in order to be less dollar-dependent.
- The dollar-pegged yuan became a trade war weapon in August when China loosened the peg, letting the currency fall.
- View Business Insider’s homepage for more stories.
China is trying to reduce its dependency on America.
According to economists at ANZ, the trade war is causing the world’s second-biggest economy to move away from the dollar, and instead upping its holdings of other foreign currencies.
“The ongoing trade war and geopolitical issues have increased the risk of a financial decoupling between China and the US,” said Raymond Yeung, Greater China chief economist, in a note.
“Although China still allocates a high share of its FX exchange reserves to the US dollar, estimated at around 59% as of June 2019, the pace of diversification into other currencies will likely quicken going forward,” Yeung said.
China’s currency, the yuan, is dollar-pegged currently and in the last year became a weapon to fight back against Trump’s trade war. In August, China let its currency fall, letting it decline to make Chinese goods cheaper to export, and American goods more expensive in light of tariff hikes – a move that shocked markets.
“The Chinese government has already discreetly diversified its offshore portfolios to include alternative investments,” Yeung said, roughly 1.8 trillion yuan worth ($256 billion) since June.
The ANZ economist added, “China has been a major contributor to the global savings glut,” saying that excessive savings led to mass capital flows towards American households and low-interest rates. Yeung also said there’s been a “significant amount” invested from China’s manufacturing sector to US government bonds.
He said this trend, which his team nicknamed, “factory-dollar recycling,” has contributed to “the global prominence of the US dollar over the past decade. However, if China initiates a convertible standard superior to the fiat-money regime, not only will it gain a market following, but it will also boost the global acceptance of the RMB.”


Activities at the Four Seasons include the following
Please use the following links to navigate our Website:


|
|
Boost.Regexclass regex_traits |
|
Under construction: the current design will be replaced by that specified in the regular expression standardization proposal, the current (obsolete) design has it's documentation archived online.
Revised 24 Oct 2003
© Copyright John Maddock 1998- 2003
Use, modification and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)


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The Prodigy star Keith Flint's belongings to be sold at auction
Items belonging to late The Prodigy star Keith Flint, including his gothic bed and a distinctive nose ring he wore on and off stage, are to be sold at auction.
The much-loved singer was found dead at his home in Essex on March 4 this year, aged 49.
He rose to fame in the 1990s in the Brit Award-winning electronic band, who were known for hits including Firestarter and Breathe.
Many of his possessions, divided into more than 170 lots, will be offered for sale in Cambridge to help settle the liabilities of his estate.
A series of viewings have been held ahead of the auction, which is due to take place from 6pm on Thursday.
Among the items are MTV music awards and presentation discs from around the world, commemorating the global success of The Prodigy.
The sale will also feature Flint’s motorcycle leathers, other clothing, and furniture including his specially-commissioned bed which he had a hand in designing.
The oak plank and steel construction is supported at each corner by entwined thorns and is accessed via steps supported on the back of a crouching winged mythical beast.
Martin Millard, director at Cheffins Fine Art auctioneers, said: “There has been a great deal of interest from all around the world in the Keith Flint Collection since the sale was announced, and the viewing days we have had so far have been busy.
“Fans of Keith who have seen the collection have been overwhelmingly positive about the way it has been presented and many have expressed an interest in buying some of the lots on Thursday night.
“We are expecting the saleroom to be busy but, beyond that, it is almost impossible to predict how much any of the items are going to make.”


Quick Links
- NEET Syllabus
- Colleges of NEET
- Payment
- Exam Center of NEET
- JEE Syllabus
- Colleges of JEE
- Exam Center of JEE
Syllabus of NEET
Chemistry
- Some Basic Concepts of Chemistry
- Structure of Atom
- Classification of Elements and Periodicity in Properties
- Chemical Bonding and Molecular Structure
- States of Matter: Gases and Liquids
- Thermodynamics
- Equilibrium
- Redox Reactions
- Hydrogen
- s-Block Element (Alkali and Alkaline earth metals)
- Some p-Block Elements
- Organic Chemistry- Some Basic Principles and Techniques
- Hydrocarbons
- Environmental Chemistry
- Solid State
- Solutions
- Electrochemistry
- Chemical Kinetics
- Surface Chemistry
- General Principles and Processes of Isolation of Elements
- p- Block Elements
- d and f Block Elements
- Coordination Compounds
- Haloalkanes and Haloarenes
- Alcohols, Phenols and Ethers
- Aldehydes, Ketones and Carboxylic Acids
- Organic Compounds Containing Nitrogen
- Biomolecules
- Polymers
- Chemistry in Everyday Life
Physics
- Physical-world and measurement
- Kinematics
- Laws of Motion
- Work, Energy and Power
- Motion of System of Particles and Rigid Body
- Gravitation
- Properties of Bulk Matter
- Thermodynamics
- Behaviour of Perfect Gas and Kinetic Theory
- Oscillations and Waves
- Electrostatics
- Current Electricity
- Magnetic Effects of Current and Magnetism
- Electromagnetic Induction and Alternating Currents
- Electromagnetic Waves
- Optics
- Dual Nature of Matter and Radiation
- Atoms and Nuclei
- Electronic Devices
Biology
- Diversity in Living World
- Structural Organisation in Animals and Plants
- Cell Structure and Function
- Plant Physiology
- Human physiology
- Reproduction
- Genetics and Evolution
- Biology and Human Welfare
- Biotechnology and Its Applications
- Ecology and environment
Marks distribution in chemistry
| Name of the chapter | Number of Questions asked (Approx.) | Weightage in percentile |
|---|---|---|
| Alcohols, Phenols and Ethers | 2 | 4 |
| Aldehydes, Ketones and Carboxylic Acids | 2 | 4 |
| Bio-Molecules | 1 | 3 |
| Chemical bonding | 2 | 5 |
| Chemical Kinetics | 1 | 3 |
| Chemistry in everyday life | 1 | 2 |
| Coordination Chemistry | 4 | 9 |
| d-and f-block elements | 2 | 4 |
| Electrochemistry | 1 | 2 |
| Environmental Chemistry | 1 | 2 |
| Equilibrium | 3 | 6 |
| General Principles and Process of Isolation elements | 1 | 2 |
| Halo alkanes and Haloarenes; Amines | 1 | 3 |
| Hydrocarbons | 1 | 3 |
| Hydrogen | 1 | 3 |
| N containing Organic Compounds | 1 | 3 |
| Organic chemistry some basic principles and techniques - 1 | 1 | 2 |
| Organic chemistry some basic principles and techniques - 2 | 1 | 2 |
| p-block elements(13 14) | 2 | 3.5 |
| p-block elements(15 16 17 18) | 2 | 3.5 |
| Periodic table | 1 | 2 |
| Polymers | 1 | 3 |
| Redox reactions | 1 | 3 |
| s-block elements | 1 | 2 |
| Solutions | 2 | 5 |
| States of Matter | 1 | 2 |
| Structure of Atom | 1 | 2 |
| Surface Chemistry | 1 | 2 |
| The Solid State | 1 | 2 |
| Thermodynamics | 4 | 8 |
| Total | 45 | 100 |
NEET chapter-wise weightage of Physics
| Name of the chapter | Number of questions asked (Approx.) | Weightage in percentile |
|---|---|---|
| Alternating current | 1 | 4 |
| Atoms | 0-1 | 1.5 |
| Current electricity | 2 | 8 |
| Dual Nature of Radiation and Matter | 2 | 6 |
| Electric Charges and Fields | 1 | 4.5 |
| Electromagnetic induction | 1 | 4 |
| Electromagnetic waves | 1 | 5 |
| Electrostatic Potential and Capacitance | 1 | 4.5 |
| Gravitation | 0-1 | 2 |
| Kinetic theory | 1 | 3 |
| Laws of Motion | 1 | 3 |
| Magnetism and Matter | 1 | 2.5 |
| Mechanical Properties of Fluids | 0-1 | 2 |
| Mechanical Properties of Solids | 0-1 | 2 |
| Motion in a Plane | 0-1 | 1.5 |
| Motion in a Straight Line | 0-1 | 1.5 |
| Moving Charges and Magnetism | 1 | 2.5 |
| Nuclei | 0-1 | 1.5 |
| Oscillations | 0-1 | 1.5 |
| Physical World, Units and Measurements | 0-1 | 2 |
| Ray optics and optical instruments | 1 | 5 |
| Semiconductor Electronics: Materials, Devices and Simple Circuits | 2 | 6 |
| System of Particles and Rotational Motion | 1 | 5 |
| Thermal Properties of Matter | 0-1 | 2 |
| Thermodynamics | 2 | 9 |
| Wave optics | 1 | 5 |
| Waves | 0-1 | 1.5 |
| Work, Energy and Power | 1 | 4 |
| Total | 45 | 100 |
NEET chapter-wise weughtage for Biology
| Name of the chapter | Number of questions asked (Approx.) | Weightage in percentile |
|---|---|---|
| Anatomy of Flowering Plants | 0-1 | 2 |
| Animal Kingdom | 2 | 7 |
| Biodiversity and Conservation | 1 | 3 |
| Biological Classification | 0-1 | 2 |
| Biomolecules | 1 | 4 |
| Biotechnology and its Applications | 1 | 3 |
| Biotechnology: Principles and Processes | 1 | 3 |
| Body Fluids and Circulation | 0-1 | 1 |
| Breathing and Exchange of Gases | 0-1 | 2 |
| Cell Cycle and Cell Division | 0-1 | 2 |
| Cell: The Unit of Life, Biomolecules | 1 | 4 |
| Chemical Coordination and Integration | 1 | 4 |
| Digestion and Absorption | 1 | 3 |
| Ecosystem | 0-1 | 2 |
| Environmental Issues | 0-1 | 2 |
| Evolution | 0-1 | 2 |
| Excretory Products and their Elimination | 0-1 | 2 |
| Human Health and Disease | 1 | 3 |
| Human Reproduction | 1 | 3 |
| Locomotion and Movement | 0-1 | 2 |
| Microbes in Human Welfare | 0-1 | 2 |
| Mineral Nutrition | 0-1 | 1 |
| Molecular Basis of Inheritance | 2 | 6 |
| Morphology of Flowering Plants | 1 | 5 |
| Neural Control and Coordination | 0-1 | 2 |
| Organisms and Populations | 0-1 | 2 |
| Photosynthesis in Higher Plants | 0-1 | 2 |
| Plant Growth and Development | 0-1 | 1 |
| Plant Kingdom | 1 | 4 |
| Principles and Inheritance and Variation | 1 | 5 |
| Reproduction in Organisms | 0-1 | 1 |
| Reproductive Health | 0-1 | 2 |
| Respiration in Plants | 0-1 | 1 |
| Sexual Reproduction in Flowering Plants | 1 | 5 |
| Strategies for Enhancement in Food Production | 0-1 | 2 |
| Structural Organisation in Animals | 0-1 | 2 |
| The Living World | 0-1 | 2 |
| Transport in Plants | 0-1 | 1 |
| Total | 90 | 100 |
Syllabus of JEE
JEE is conducted in 2 levels one of them is JEE mains and the other is JEE advanced.JEE mains is needed to appear in JEE advanced and JEE mains allows admission in various IITs and NITs. The syllabus of both JEE mains and JEE advanced are given below :
JEE mains syllabus
There are three subjects asked in JEE mains they are Chemistry, Physics and Mathmatics.
Chemistry
Chemistry is further divided into Physical Chemistry, Organic chemistry and Inorganic Chemistry.
Physical Chemistry
- Some basic concepts of Chemistry
- States of matter
- Atomic structure
- Chemical bonding and molecular structure
- Chemical thermodynamics
- Solutions
- Equillibrium
- Redox reactons and electrochemistry
- Chemical kinetics
- Surface chemistry
Organic chemistry
- Purification and characterstics of organic chemistry
- Hydrocarbons
- Chemistry in everyday life
- Principles related to practical chemistry
- Organic compounds containing halogens
- Organic compounds containing Oxygen
- Organic compounds containing Nitrogen
- Polymers
- Some baasic principles of organic chemistry
- Biomolecules
Inorganic chemistry
- Classification of elements and periodicity in properties
- Hydrogen
- Block elements (alkali and alkaline earth metals)
- P BLock elements (alkali and alkaline earth metals)
- D- and F- block elements
- Co-ordination chemistry
- Environmental chemistry
- General principles and processes of isolation of metals
Physics
- Physics and mesurement
- Rotational motion
- Thermodynamics
- Kinematics
- Work, energy and power
- Properties of solids and liquids
- Gravitation
- Laws of motion
- Oscillation and waves
- Electronic devices
- Kinetic theory of gases
- Current electricity
- Communication system
- Electromagnetic induction and alternating current
- Magnetic effects of current and magnetism
- Optics
- Electromagnetic waves
- Atoms and nuclei
- Electrostatics
- Dual nature of matter and radiation
Mathmatics
- Complex numbers and quadratic equations
- Matrices and determinants
- Sets, relations and funstions
- Mathmatical induction
- Limit, continuty and differentiability
- Integral calculus
- Three-dimensional calculus
- Differntial equations
- Binomial theorem ad its simple application
- Sequence and Series
- Vector algebra
- Statistics and probablity
- Co-ordinate geometry
JEE advanced syllabus
Physics
General
- Units and dimension
- dimensional analysis
- least count
- significant figures
- Methods of measurement and error analysis for physical quantities pertaining to the following
experiments:
- Experiments based on using Vernier calipers and screw gauge (micrometer)
- Determination of g using simple pendulum, Young’s modulus by Searle’s method
- Specific heat of a liquid using calorimeter
- focal length of a concave mirror ,a convex lens using u-v method
- Speed of sound using resonance column
- Verification of Ohm’s law using voltmeter and ammeter, and specific resistance of the material of a wire using meter bridge and post office box.
Mechanics
- Kinematics in one and two dimensions (Cartesian coordinates only), projectiles
- Uniform circular motion
- Relative velocity
- Newton’s laws of motion
- Inertial and uniformly accelerated frames of reference
- Static and dynamic friction
- Kinetic and potential energy
- Work and power
- Conservation of linear momentum and mechanical energy.
- Systems of particles
- Centre of mass and its motion
- Impulse
- Elastic and inelastic collisions
- Law of gravitation
- Gravitational potential and field
- Acceleration due to gravity
- Motion of planets and satellites in circular orbits
- Escape velocity
- Rigid body, moment of inertia, parallel and perpendicular axes theorems, moment of inertia of uniform bodies with simple geometrical shapes
- Angular momentum
- Torque
- Conservation of angular momentum
- Dynamics of rigid bodies with fixed axis of rotation
- Rolling without slipping of rings, cylinders and spheres; Equilibrium of rigid bodies
- Collision of point masses with rigid bodies
- Linear and angular simple harmonic motions
- Hooke’s law, Young’s modulus
- Pressure in a fluid
- Pascal’s law
- Buoyancy
- Surface energy and surface tension, capillary rise
- Viscosity (Poiseuille’s equation excluded), Stoke’s law
- Terminal velocity, Streamline flow, equation of continuity, Bernoulli’s theorem and its applications.
- Wave motion (plane waves only), longitudinal and transverse waves, superposition of waves
- Progressive and stationary waves
- Vibration of strings and air columns
- Resonance
- Beats
- Speed of sound in gases
- Doppler effect (in sound)
Thermal Physics
- Thermal expansion of solids, liquids and gases
- Calorimetry, latent heat; Heat conduction in one dimension
- Elementary concepts of convection and radiation
- Newton’s law of cooling
- Ideal gas laws
- Specific heats (Cv and Cp for monoatomic and diatomic gases)
- Isothermal and adiabatic processes, bulk modulus of gases
- Equivalence of heat and work
- First law of thermodynamics and its applications (only for ideal gases)
- Blackbody radiation: absorptive and emissive powers
- Kirchhoff’s law
- Wien’s displacement law, Stefan’s law.
Electricity and magnetism
- Coulomb’s law
- Electric field and potential
- Electrical potential energy of a system of point charges and of electrical dipoles in a uniform electrostatic field
- Electric field lines
- Flux of electric field
- Gauss’s law and its application in simple cases, such as, to find field due to infinitely long straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell
- Capacitance
- Parallel plate capacitor with and without dielectrics
- Capacitors in series and parallel
- Energy stored in a capacitor
- Electric current
- Ohm’s law
- Series and parallel arrangements of resistances and cells
- Kirchhoff’s laws and simple applications
- Heating effect of current
- Biot–Savart’s law and Ampere’s law
- Magnetic field near a current-carrying straight wire, along the axis of a circular coil and inside a long straight solenoid
- Force on moving charge and on a current-carrying wire in a uniform magnetic field
- Magnetic moment of a current loop
- Effect of a uniform magnetic field on a current loop
- Moving coil galvanometer, voltmeter, ammeter and their conversions
- Electromagnetic induction: Faraday’s law, Lenz’s law; Self and mutual inductance
- RC, LR and LC circuits with d.c. and a.c. sources
Optics
- Rectilinear propagation of light
- Reflection and refraction at plane and spherical surfaces
- Total internal reflection
- Deviation and dispersion of light by a prism
- Thin lenses
- Combinations of mirrors and thin lenses
- Magnification
- Wave nature of light: Huygen’s principle, interference limited to Young’s double-slit experiment
Modern physics
- Atomic nucleus
- α, β and γ radiations
- Law of radioactive decay
- Decay constant
- Halflife and mean life
- Binding energy and its calculation
- Fission and fusion processes
- Energy calculation in these processes. Photoelectric effect
- Bohr’s theory of hydrogen-like atoms
- Characteristic and continuous X-rays, Moseley’s law
- de Broglie wavelength of matter waves
Mathmatics
Algebra
- Complex numbers, addition, multiplication, conjugation, polar representation, properties of modulus and principal argument, triangle inequality, cube roots of unity, geometric interpretations.
- Quadratic equations with real coefficients, relations between roots and coefficients, formation of quadratic equations with given roots, symmetric functions of roots.
- Arithmetic, geometric and harmonic progressions, arithmetic, geometric and harmonic means, sums of finite arithmetic and geometric progressions, infinite geometric series, sums of squares and cubes of the first n natural numbers.
- Logarithms and their properties.
- Permutations and combinations, binomial theorem for a positive integral index, properties of binomial coefficients.
Matrices
- Matrices as a rectangular array of real numbers, equality of matrices, addition, multiplication by a scalar and product of matrices, transpose of a matrix, determinant of a square matrix of order up to three, inverse of a square matrix of order up to three,properties of these matrix operations, diagonal, symmetric and skew-symmetric matrices and their properties, solutions of simultaneous linear equations in two or three variables.
Probability
- Addition and multiplication rules of probability, conditional probability, Bayes Theorem,independence of events, computation of probability of events using permutations and combinations.
Trignometry
- Trigonometric functions, their periodicity and graphs, addition and subtraction formulae, formulae involving multiple and sub-multiple angles, general solution of trigonometric equations.
- Relations between sides and angles of a triangle, sine rule, cosine rule, half-angle formula and the area of a triangle, inverse trigonometric functions (principal value only).
Analytical geometry
- Two dimensions: Cartesian coordinates, distance between two points, section formulae, shift of origin.
- Equation of a straight line in various forms, angle between two lines, distance of a point from a line
- Lines through the point of intersection of two given lines, equation of the bisector of the angle between two lines, concurrency of lines
- Centroid, orthocentre, incentre and circumcentre of a triangle.
- Equation of a circle in various forms, equations of tangent, normal and chord.
- Parametric equations of a circle, intersection of a circle with a straight line or a circle,equation of a circle through the points of intersection of two circles and those of a circle and a straight line.
- Equations of a parabola, ellipse and hyperbola in standard form, their foci, directrices and eccentricity, parametric equations, equations of tangent and normal.
- Locus problems.
- Three dimensions: Direction cosines and direction ratios, equation of a straight line in space, equation of a plane, distance of a point from a plane
Differntial calculus
- Real valued functions of a real variable, into, onto and one-to-one functions, sum,difference, product and quotient of two functions, composite functions, absolute value, polynomial, rational, trigonometric, exponential and logarithmic functions.
- Limit and continuity of a function, limit and continuity of the sum, difference, product and quotient of two functions, L’Hospital rule of evaluation of limits of functions.
- Even and odd functions, inverse of a function, continuity of composite functions, intermediate value property of continuous functions.
- Derivative of a function, derivative of the sum, difference, product and quotient of two functions, chain rule, derivatives of polynomial, rational, trigonometric, inverse trigonometric, exponential and logarithmic functions.
- Derivatives of implicit functions, derivatives up to order two, geometrical interpretation of the derivative, tangents and normals, increasing and decreasing functions, maximum and minimum values of a function, Rolle’s theorem and Lagrange’s mean value theorem.
Integral Calculus
- Integration as the inverse process of differentiation, indefinite integrals of standard functions, definite integrals and their properties, fundamental theorem of integral calculus.
- Integration by parts, integration by the methods of substitution and partial fractions, application of definite integrals to the determination of areas involving simple curves.
- Formation of ordinary differential equations, solution of homogeneous differential equations, separation of variables method, linear first order differential equations.
Vectors
- Addition of vectors, scalar multiplication, dot and cross products, scalar triple products and their geometrical interpretations.
Chemistry
Physical chemistry
General topics
- Concept of atoms and molecules; Dalton’s atomic theory; Mole concept
- Chemical formulae
- Balanced chemical equations
- Calculations (based on mole concept) involving common oxidation-reduction, neutralisation, and displacement reactions
- Concentration in terms of mole fraction, molarity, molality and normality.
Gaseous and liquid states
- Absolute scale of temperature, ideal gas equation
- Deviation from ideality, van der Waals equation
- Kinetic theory of gases, average, root mean square and most probable velocities and their relation with temperature
- Law of partial pressures; Vapour pressure
- Diffusion of gases.
Atomic structure and chemical structrure
- Bohr model, spectrum of hydrogen atom, quantum numbers
- Wave-particle duality, de Broglie hypothesis
- Uncertainty principle
- Qualitative quantum mechanical picture of hydrogen atom, shapes of s, p and d orbitals
- Electronic configurations of elements (up to atomic number 36)
- Aufbau principle
- Pauli’s exclusion principle and Hund’s rule
- Orbital overlap and covalent bond
- Hybridisation involving s, p and d orbitals only
- Orbital energy diagrams for homonuclear diatomic species
- Hydrogen bond
- Polarity in molecules, dipole moment (qualitative aspects only)
- VSEPR model and shapes of molecules (linear, angular, triangular, square planar, pyramidal, square pyramidal, trigonal bipyramidal, tetrahedral and octahedral).
Energetics
- First law of thermodynamics
- Internal energy, work and heat, pressure-volume work
- Enthalpy, Hess’s law; Heat of reaction, fusion and vapourization
- Second law of thermodynamics
- Entropy
- Free energy
- Criterion of spontaneity
Chemical Equillibrium
- Law of mass action
- Equilibrium constant, Le Chatelier’s principle (effect of concentration, temperature and pressure)
- Significance of ΔG and ΔG° in chemical equilibrium
- Solubility product, common ion effect, pH and buffer solutions
- Acids and bases (Bronsted and Lewis concepts)
- Hydrolysis of salts
Electrochemistry
- Electrochemical cells and cell reactions
- Standard electrode potentials
- Nernst equation and its relation to ΔG; Electrochemical series, emf of galvanic cells
- Faraday’s laws of electrolysis
- Electrolytic conductance, specific, equivalent and molar conductivity, Kohlrausch’s law
- Concentration cells
Chemical Kinetics
- Rates of chemical reactions
- Order of reactions
- Rate constant
- First order reactions
- Temperature dependence of rate constant (Arrhenius equation)
Solid state
- Classification of solids, crystalline state, seven crystal systems (cell parameters a, b, c, α, β, γ), close packed structure of solids (cubic), packing in fcc, bcc and hcp lattices
- Nearest neighbours, ionic radii, simple ionic compounds, point defects
Solutions
- Raoult’s law
- Molecular weight determination from lowering of vapour pressure, elevation of boiling point and depression of freezing point.
Surface chemistry
- Elementary concepts of adsorption (excluding adsorption isotherms)
- Colloids: types, methods of preparation and general properties
- Elementary ideas of emulsions, surfactants and micelles (only definitions and examples)
Nuclear chemistry
- Radioactivity: isotopes and isobars
- Properties of α, β and γ rays
- Kinetics of radioactive decay (decay series excluded), carbon dating
- Stability of nuclei with respect to protonneutron ratio
- Brief discussion on fission and fusion reactions
Inorganic chemistry
Isolation/preparation and and properties of the following non-metals
- Boron, silicon, nitrogen, phosphorus, oxygen, sulphur and halogens
- Properties of allotropes of carbon (only diamond and graphite), phosphorus and sulphur
Preparation and properties of foolowing compounds
- Oxides, peroxides, hydroxides, carbonates, bicarbonates, chlorides and sulphates of sodium, potassium, magnesium and calcium
- Boron: diborane, boric acid and borax
- Aluminium: alumina, aluminium chloride and alums
- Carbon: oxides and oxyacid (carbonic acid)
- Silicon: silicones, silicates and silicon carbide
- Nitrogen: oxides, oxyacids and ammonia
- Phosphorus: oxides, oxyacids (phosphorus acid, phosphoric acid) and phosphine
- Oxygen: ozone and hydrogen peroxide
- Sulphur: hydrogen sulphide, oxides, sulphurous acid, sulphuric acid and sodium thiosulphate
- Halogens: hydrohalic acids, oxides and oxyacids of chlorine, bleaching powder
- Xenon fluorides
Transition elements
- Definition, general characteristics, oxidation states and their stabilities, colour (excluding the details of electronic transitions) and calculation of spin-only magnetic moment
- Coordination compounds: nomenclature of mononuclear coordination compounds, cistrans and ionisation isomerisms, hybridization and geometries of mononuclear coordination compounds (linear, tetrahedral, square planar and octahedral)
Preparation and spropertoes of following compounds
- Oxides and chlorides of tin and lead
- Oxides, chlorides and sulphates of Fe2+, Cu2+ and Zn2+
- Potassium permanganate, potassium dichromate, silver oxide, silver nitrate, silver thiosulphate
Ores and minerals
- Commonly occurring ores and minerals of iron, copper, tin, lead, magnesium, aluminium, zinc and silver.
Extractive metallurgy
- Chemical principles and reactions only (industrial details excluded)
- Carbon reduction method (iron and tin)
- Self reduction method (copper and lead)
- Electrolytic reduction method (magnesium and aluminium)
- Cyanide process (silver and gold)
Principles of qualitative analysis
- Groups I to V (only Ag+, Hg2+, Cu2+, Pb2+, Bi3+, Fe3+, Cr3+, Al3+, Ca2+, Ba2+, Zn2+, Mn2+ and Mg2+); Nitrate, halides (excluding fluoride), sulphate and sulphide
Organic chemistry
Concepts
- Hybridisation of carbon
- σ and π-bonds
- Shapes of simple organic molecules
- Structural and geometrical isomerism
- Optical isomerism of compounds containing up to two asymmetric centres, (R,S and E,Z nomenclature excluded)
- IUPAC nomenclature of simple organic compounds (only hydrocarbons, mono-functional and bi-functional compounds)
- Conformations of ethane and butane (Newman projections)
- Resonance and hyperconjugation
- Keto-enoltautomerism
- Determination of empirical and molecular formulae of simple compounds (only combustion method)
- Hydrogen bonds: definition and their effects on physical properties of alcohols and carboxylic acids
- Inductive and resonance effects on acidity and basicity of organic acids and bases
- Polarity and inductive effects in alkyl halides
- Reactive intermediates produced during homolytic and heterolytic bond cleavage
- Formation, structure and stability of carbocations, carbanions and free radicals
Preparation, properties and reaction of alkanes
- Homologous series, physical properties of alkanes (melting points, boiling points and density)
- Combustion and halogenation of alkanes
- Preparation of alkanes by Wurtz reaction and decarboxylation reactions
Preparation and properties of alkenes and alkynes
- Physical properties of alkenes and alkynes (boiling points, density and dipole moments)
- Acidity of alkynes
- Acid catalysed hydration of alkenes and alkynes (excluding the stereochemistry of addition and elimination)
- Reactions of alkenes with KMnO4 andozone
- Reduction of alkenes and alkynes
- Preparation of alkenes and alkynes by elimination reactions
- Electrophilic addition reactions of alkenes with X2, HX, HOX and H2O (X=halogen)
- Addition reactions of alkynes
- Metal acetylides
Reaction of benzene
- Structure and aromaticity
- Electrophilic substitution reactions: halogenation, nitration, sulphonation, Friedel-Crafts alkylation and acylation
- Effect of o-, m- and p-directing groups in monosubstituted benzenes
Phenols
- Acidity, electrophilic substitution reactions (halogenation, nitration and sulphonation)
- Reimer-Tieman reaction, Kolbe reaction
Characteristic reactions of the following (including those mentioned above)
- Alkyl halides: rearrangement reactions of alkyl carbocation, Grignard reactions, nucleophilic substitution reactions
- Alcohols: esterification, dehydration and oxidation, reaction with sodium, phosphorus halides, ZnCl2/concentrated HCl, conversion of alcohols into aldehydes and ketones
- Ethers: Preparation by Williamson’s Synthesis
- Aldehydes and Ketones: oxidation, reduction, oxime and hydrazone formation
- Aldol condensation, Perkin reaction
- Cannizzaro reaction
- Haloform reaction and nucleophilic addition reactions (Grignard addition)
- Carboxylic acids: formation of esters, acid chlorides and amides, ester hydrolysis
- Amines: basicity of substituted anilines and aliphatic amines, preparation from nitro compounds, reaction with nitrous acid, azo coupling reaction of diazonium salts of aromatic amines, Sandmeyer and related reactions of diazonium salts
- Carbylamine reaction
- Haloarenes: nucleophilic aromatic substitution in haloarenes and substituted haloarenes (excluding Benzyne mechanism and Cine substitution)
Carbohydrates
- Classification; mono- and di-saccharides (glucose and sucrose)
- Oxidation, reduction, glycoside formation and hydrolysis of sucrose
Amino acids and pepetides
- General structure (only primary structure for peptides) and physical properties.
Properties and uses of some polymers
- Natural rubber, cellulose, nylon, teflon and PVC
Practical organic chemistry
- Detection of elements (N, S, halogens)
- Detection and identification of the following functional groups: hydroxyl (alcoholic and phenolic), carbonyl (aldehyde and ketone), carboxyl, amino and nitro
- Chemical methods of separation of mono-functional organic compounds from binary mixtures


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--- layout: post status: publish published: true title: ESBs and WS-* continued author: display_name: Tomas Restrepo login: tomasr email<EMAIL_ADDRESS>url: http://winterdom.com/ author_login: tomasr author_email<EMAIL_ADDRESS>author_url: http://winterdom.com/ wordpress_id: 71 wordpress_url: http://winterdom.com/2005/05/esbsandwscontinued date: '2005-05-02 17:36:50 +0000' date_gmt: '2005-05-02 17:36:50 +0000' categories: - Web Services tags: [] comments: - id: 54 author: free partypoker author_email<EMAIL_ADDRESS>author_url: http://www.the-partypoker.com date: '2006-08-15 03:40:56 +0000' date_gmt: '2006-08-15 03:40:56 +0000' content: | I don't care about Justin Cuong Van 'J.C.' Tran, he is keen, bicentennial, and fuller and I am not going to unsnap about it. Two broccolis are better than one. But many amusers spoil the chorea. And a rolling quicksilver gathers no perilymph. My favorite morositys are Mike Nargi the parenthetical and Cathy Hulbert the frowzy. Jarl Lindholt is a narrow epoch? Then Isabelle Mercier silts a flamboyant dewclaw. The discontinuation demark his brimstone. Edward Moncada is so winged that Richard Kain wants to trepan. ---
Adrian Bateman chimes in on the debate with his toughts here, good stuff. For what it's worth, I agree with a lot of what Adrian says, I just view it in a different light.
Adrian points out that most ESB vendors will have you believe that you can get everything flowing neatly through a single messaging bus, and Adrian is skeptical about that. Well, I am, as well, truth be told. Personally, I'm of the opinion that what we might end up seeing are sort of integrated networks of connected applications, some of them possibly using common infrastructure, other using point to point connections, etc.
One key point I believe in the discussion is that a lot of these networks of connected applications will require some sort of messaging middleware infrastructure (be that an integration platform, an ESB or whatever). My personal reason for this is that, as I said in my previous entry on the matter, single protocol speak is gonna be hard to achieve. This is not a technological problem, mind you, it's a money and ROI problem which is a completely different story. Also, my experience from working on EAI projects is that connecting applications is in many cases not as simple as getting a message from A to B, even if A and B can talk webservices or offer some sort of services: Translations are needed, communication business rules have to be enforced, etc.
So, the problem is not always about connectivity, but about bridging disparate semantics.WS-* cannot fix that, my friends. That's a key reason why integration platforms have things like orchestration support, business rules engines, message transformation, and so on.
Looking at it from another perspective: Consider the spaghetti of connected applications that Adrian posted (cool figures, btw):
This a very real problem in enterprises today, and one not to be taken lightly. Now, consider the case in which all of those applications in the figure spoke WS-*. Would it be any less spaghetti by itself? It would certainly be a more loosely coupled and possible easier to maintain spaghetti, but it most certainly does not make it any easier to manage (and version, etc.).
As I said, I haven't made up my mind completely about this topic, I'm just begining to understand how it all fits together (and in a real sense most people are, I believe). This is a good discussion!


Energy consumption tip
A warm blanket can do wonders for keeping the heat down. Personally I'd choose a goose down duvet - there's a place here in Montreal that will do a queen size super thick one for $300 with a ten year warranty. Unfortunately, Joan is allergic to everything, so Ikea had a king-size synthetic duvet that is very down-like and super warm. I think it retails for $120 before, I got it from the As-is section for $99 with tax. Don't worry, I took the tacks out. I mean, don't worry, we washed it.
Joan still has a problem with it being TOO warm. I have an extra sheet on and I find it nice and toasty.
About this entry
You"re currently reading "Energy consumption tip," an entry on a crick in the net
- Published:
- 11.29.05 / 9am
- Category:
- Enviroh-oh-Oh!
Allergies aside, I also have an ethical issue with buying down products. I am now sticking my tongue out at you.
Which doesn't necessarily clear things ethically, but it does improve matters.
er, link with above blockquote
[...] By the way, I'm quite happy to say that even though it has dropped to -10°r;C, we haven't turned on the electric heaters yet. This is due to two things: the water radiators have been working almost non-stop so far this year, and the big warm blanket. [...]
I thought I had read that synthetic was actually worse for allergies over time? I was reading an article trying to explain why allergies are increasinly common and one of the things they pointed to was newer (cheaper, ‘modern') synthetic pillows and such.


Migrating data across services
Photo from Datanami
With reference to my last post and comment on the corresponding LinkedIn post, I’m explaining how we planned migrating data while transitioning to microservices architecture. There can be multiple approaches to do the same. In a nutshell - we simply want to replicate the data to the new service in a reliable manner at scale.
-
Dump and restore the table on database level - Whatever database you’re using, there should be some utility that allows you to do the same. But this is a one time operation, and doesn’t ensure continuous sync of data. For the systems that hardly change, we can do this. Another thing that we assume here is that schema is exactly the same. Often, when we transition to services, some columns change or get removed (eg. foreign keys that no longer exist in new system). So this is very less likely to be used.
-
Setup hooks in old service & continuously sync data - I assume that your MVC architecture would help you to setup such hooks. Eg. we use
after_commit
callbacks in Rails models to replicate such data. And some custom scripts (or rails console) to backfill existing data. Depending on size of data this might take a lot of time to backfill existing data, but should replicate the complete data on the new system.
We used the second approach, architected by Nimish Mehta (Senior Staff Engineer @ LocoNav). Even to implement this approach, there are multiple ways, where each has it’s own complexity and reliability:
- Directly replicate data - Here, we’ll simply use the hook in the first application to hit some REST/grPC endpoint of the second application. This should work well till the second system is up and running. Incase the second system goes down, our application should have sufficient retry mechanism before it considers to stop sending further data, or to mark the current packet as
failed
. There are more things that can happen. Considering a large system, where many such use cases will exist, it was inefficient to build this intelligence in all of them. We needed a better solution. - Producer-consumer pattern - We thought of setting up a queueing mechanism using Kafka topics. The primary app (producer) shall publish the data on kafka topic and the new app (consumer) shall read the data from kafka topic whenever it is available. Though this sounded good, it would mean that all such consumer applications shall have the logic to read kafka topic and maintain success/failure logs. This was again adding complexity to each consumer application, and hence this solution was not optimized for the long run.
- Setup an app in the middle - The best solution that we found was to have an app in between producer and consumer. So it goes like - your producer app publishes the data on kafka topic and your consumer app exposes a REST endpoint that accepts data in a known format. In the middle, we have an application that takes care of:
- Reading data from Kafka.
- Formatting it to JSON (from optimization perspective, we published in protobuf format).
- Pushing to consumer application’s REST endpoint.
- Having enough retries and a lot of configuration around the same.
- Scalable, partitioned database that stored logs of all requests sent to the REST endpoint.
- Provision to retry upto
MAX_RETRIES
(configurable) per use case. - Provision to retain success/failure logs upto certain hours/days (configurable), and much more.
We found the third architecture best for our use case because it has almost zero duplication of code/optimizations on producer or consumer end. Also, in case we need to build anything in future (eg. a UI to query failure logs, or a button to retry), we’d just need to build in the central app. From our experience, I can say that it has solved a lot of pain for other teams because success/failure logs become large with time and none of the team need to worry about it because the team maintaining this central app (“developer productivity team”) takes care of that. This simplifies both apps and life of other developers 😇.
See you guys in the next post.


|
xpcc
|
Dynamic Arrays. More...
#include <xpcc/container/dynamic_array.hpp>
Classes | |
| class | const_iterator |
| forward const iterator More... | |
| class | iterator |
| Forward iterator. More... | |
Public Types | |
| typedef std::size_t | SizeType |
Public Member Functions | |
| DynamicArray (const Allocator &allocator=Allocator()) | |
| Default constructor. More... | |
| DynamicArray (SizeType n, const Allocator &allocator=Allocator()) | |
| Allocation constructor. More... | |
| DynamicArray (SizeType n, const T &value, const Allocator &allocator=Allocator()) | |
| Repetitive sequence constructor. More... | |
| DynamicArray (std::initializer_list< T > init, const Allocator &allocator=Allocator()) | |
| Initializer List constructor. More... | |
| DynamicArray (const DynamicArray &other) | |
| DynamicArray & | operator= (const DynamicArray &other) |
| bool | isEmpty () const |
| Test whether dynamic array is empty. More... | |
| SizeType | getSize () const |
| Return size. More... | |
| SizeType | getCapacity () const |
| Return size of allocated storage. More... | |
| void | reserve (SizeType n) |
| Request a change in capacity. More... | |
| void | clear () |
| Remove all elements and set capacity to zero. More... | |
| void | removeAll () |
| Remove all elements. More... | |
| T & | operator[] (SizeType index) |
| Access element. More... | |
| const T & | operator[] (SizeType index) const |
| Access element. More... | |
| void | append (const T &value) |
| Add element at the end. More... | |
| void | removeBack () |
| Delete last element. More... | |
| const T & | getFront () const |
| T & | getFront () |
| const T & | getBack () const |
| T & | getBack () |
| iterator | begin () |
| Returns a read/write iterator that points to the first element in the list. More... | |
| const_iterator | begin () const |
| Returns a read-only (constant) iterator that points to the first element in the list. More... | |
| iterator | end () |
| Returns a read/write iterator that points one past the last element in the list. More... | |
| const_iterator | end () const |
| Returns a read-only (constant) iterator that points one past the last element in the list. More... | |
| iterator | find (const T &value) |
| Returns a read/write iterator that points to the first element that contains value. More... | |
| const_iterator | find (const T &value) const |
| Returns a read-only (constant) iterator that points to the first element that contains value. More... | |
Dynamic Arrays are a kind of sequence containers. As such, their elements are ordered following a strict linear sequence.
Just as regular arrays, dynamic arrays containers have their elements stored in contiguous storage locations, which means that their elements can be accessed not only using iterators but also using offsets on regular pointers to elements.
Reallocations may be a costly operation in terms of performance, since they generally involve the entire storage space used by the dynamic array to be copied to a new location. Therefore, whenever large increases in size are planned for a dynamic array, it is recommended to explicitly indicate a capacity for the dynamic array using member function DynamicArray::reserve().
| xpcc::DynamicArray< T, Allocator >::DynamicArray | ( | const Allocator & | allocator = Allocator() | ) |
Constructs an empty dynamic array, with no content and a size of zero.
| xpcc::DynamicArray< T, Allocator >::DynamicArray | ( | SizeType | n, |
| const Allocator & | allocator = Allocator() |
||
| ) |
Construct a dynamic array of given capacity. The array will still be empty.
| xpcc::DynamicArray< T, Allocator >::DynamicArray | ( | SizeType | n, |
| const T & | value, | ||
| const Allocator & | allocator = Allocator() |
||
| ) |
Construct a dynamic array of given size.
Initializes the dynamic array with its content set to a repetition, n times, of copies of value.
| xpcc::DynamicArray< T, Allocator >::DynamicArray | ( | std::initializer_list< T > | init, |
| const Allocator & | allocator = Allocator() |
||
| ) |
Construct a dynamic array that holds the values specified in the initialize list
|
inline |
Returns whether the dynamic array container is empty, i.e. whether its size is 0.
|
inline |
Returns the number of elements in the container.
|
inline |
Returns the size of the allocated storage space in the dynamic array object.
Notice that, in dynamic arrays, the capacity is not necessarily equal to the number of elements that conform the underlying dynamic array content (this can be obtained with member DynamicArray::getSize()), but the capacity of the actual allocated space, which is either equal or greater than the content size.
| void xpcc::DynamicArray< T, Allocator >::reserve | ( | SizeType | n | ) |
Requests that the capacity of the allocated storage space for the elements of the dynamic array container be at least enough to hold n more elements.
This informs the dynamic array of a planned increase in size, although notice that the parameter n informs of a minimum, so the resulting capacity may be any capacity equal or larger than this.
| void xpcc::DynamicArray< T, Allocator >::clear | ( | ) |
Frees all allocated memory and sets the capacity of the container to zero.
| void xpcc::DynamicArray< T, Allocator >::removeAll | ( | ) |
Keeps the capacity at its current level.
|
inline |
Returns a reference to the element at position n in the dynamic array container.
|
inline |
Returns a reference to the element at position n in the dynamic array container.
| void xpcc::DynamicArray< T, Allocator >::append | ( | const T & | value | ) |
Adds a new element at the end of the dynamic array, after its current last element. The content of this new element is initialized to a copy of value
.
This effectively increases the dynamic array size by one, which causes a reallocation of the internal allocated storage if the dynamic array size was equal to the dynamic array capacity before the call. Reallocations invalidate all previously obtained iterators, references and pointers.
| void xpcc::DynamicArray< T, Allocator >::removeBack | ( | ) |
Removes the last element in the dynamic array, effectively reducing the dynamic array size by one and invalidating all iterators and references to it.
This calls the removed element's destructor.
| iterator xpcc::DynamicArray< T, Allocator >::begin | ( | ) |
Iteration is done in ordinary element order.
| const_iterator xpcc::DynamicArray< T, Allocator >::begin | ( | ) | const |
Iteration is done in ordinary element order.
| iterator xpcc::DynamicArray< T, Allocator >::end | ( | ) |
Iteration is done in ordinary element order.
| const_iterator xpcc::DynamicArray< T, Allocator >::end | ( | ) | const |
Iteration is done in ordinary element order.
| iterator xpcc::DynamicArray< T, Allocator >::find | ( | const T & | value | ) |
If value is not found, it points to the last element.
| const_iterator xpcc::DynamicArray< T, Allocator >::find | ( | const T & | value | ) | const |
If value is not found, it points to the last element.


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Money: You've got it, we want it. But let it never be said we're not incredibly fair! Burger sales? Check. Pizza sales? Check. Burger and pizza sales?? Check, check, check! We seriously can't stop making deals.


Kauai is the oldest of the Hawaiian islands and known for its impressive coastlines, as well as being one of the wettest spots on earth. With more wild chickens than people, picturesque beaches, and beautiful hiking options, it's the perfect location for a relaxing vacation!
What I love:
For more info about Kauai, click here.
A city older than the United States, New Orleans (NOLA for short) is a place unlike anywhere else on earth. An amalgamation of French, Spanish, and Creole cultures have created a vibrant city known for its unique architecture, decadent food, and rich musical scene. If you visit, you may just have the time of your life!
What I love:
For more info about New Orleans, click here.
Ubud is a truly magical place that capitvates almost everyone who visits. Famous for its temples, rice paddies, and wild monkeys, it's the perfect place for someone looking for a spiritual getaway.
What I love:
For more info about Ubud click here.


Package for pattern miner utility. This package is not an essential part of the framework, but an
example implementation of pattern search software using the framework. Each miner class is capable
of creating the pattern and writing the result to a text output. The Dialog class is a GUI that
executes the selected miner class on a selected model and writes output to the given file.


Example of trusting users too much in industry.
VirtualBox is a free and open source virtualization program. In a nutshell, VirtualBox allows you to run a "guest" operating system at the same time as your normal (or "host") operating system.
Visit the VirtualBox project downloads page to download.
Visit the VirtualBox project downloads page to download.
Most Linux distributions will be able to install VirtualBox from their package manager.
VirtualBox is included in the multiverse
non-free repository which is not enabled by
default. To enable it, run sudo add-apt-repository multiverse && sudo apt-get update
.
Once enabled, you will be able to install VirtualBox using sudo apt install virtualbox
Install using your distro's package manager, or follow the directions listed on the VirtualBox project site.
Now you have a virtual machine that you do not know the password to.
Click Devices->Choose disk image...
Select live cd from downloads
Click Machine->Reset
Select Try Ubuntu
Click Activites
Search terminal
Type following commands into the terminal:
sudo su
fdisk -l
mkdir /mnt/temp
mount /dev/sda1 /mnt/temp
chroot /mnt/temp
Type following commands into the terminal:
For this lab we are using root. You can change root to whatever username is on the system.
passwd root
Type following commands into the terminal:
exit
umount /mnt/temp
exit
Type following commands into the terminal:
reboot -n
Now you have a virtual machine that you do not know the password to.


A basic Tetris clone implemented HTML5 & JavaScript.
Created for educational & testing purposes. Heavily stylized to mask the mediocrity of the code.
Blocks designed by YekoPi
Source code available at GitHub


Federal Govt. Approves N200b Loan For Bank Of Industry
by Emmanuel EgobiambuThe Federal Executive Council (FEC) has approved the issuance of a Sovereign Guarantee N200bn loan to the Bank of Industry (BoI), Concise News has learned.
Concise News understands that the money is from the Credit Suisse AG London Branch and a syndicate of international lenders.
Nigeria’s Minister of State, Budget and National Planning, Clement Agba, revealed this in Abuja on Wednesday after the FEC meeting.
According to Agba, the loan was meant to bankroll major industrialization projects and micro-small and medium enterprises value chains in Nigeria for up to a five-year tenure at affordable rates.
He noted that the rates are single-digit, stating that the guarantor of the loan, to be executed through the Ministry of Finance, Budget and National Planning, shall be the Federal Republic of Nigeria.
“We do believe that about 1.2 million jobs will be created through this facility; increase the income of farming communities and promote the inclusion of SMEs and smallholder producers in the industrial value chain and the deployment of transportation infrastructure that connect farming communities to processors and market,” he said.
“The loan will be swapped to Naira by the CBN to mitigate the foreign exchange risk and the fund will, therefore, be available to Nigerian enterprises at a more affordable rate and in local currency.”


Person Account Comparisons
The core Salesforce entities are Accounts and Contacts, and, by design, the platform divides fields and capabilities between the two entities. For example, you can schedule a meeting with a Contact, but not with an Account.
To better support Business to Consumer solutions, in 2006, Salesforce introduced Person Accounts as a standard option. Person Accounts seamlessly combine an Account and a Contact, so that you have all the capabilities you need when working directly with individuals.
Following its continuous improvement model, Salesforce has brought Person Accounts deeper and deeper into the platform, so that core native features like Formulas, Merge, and Search “just work”. Best of all, you don’t have to choose. Some of your customers can be companies, and others can be individuals, and all the core platform features are available to all your customers equally.
Although Person Accounts are a standard feature, some people still prefer to implement their own Business-to-Consumer support as a proprietary workaround. To help customers make an informed decision, this page presents the pros and cons of the common B2C approaches, starting wth Person Accounts.
Person Account Model
Person Accounts are represented as a native Salesforce record type. When an Account is added for the Person Account record type, the platform automatically creates the PersonAccount and PersonContact records, and binds them together, so that you use all of the capabilities and fields for Accounts and Contacts, in a natural, transparent way.
Person Account Pros
- Elegant, native implementation supported by Salesforce.
- Salesforce is committed to maintaining and improving Person Accounts.
- Supports core features from Activities to Workflows, including Campaigns, Cases, Chatter, Communities, Contact Roles, Contracts, Cross-Object Formulas, Custom Fields, * Custom Objects, Outlook, Connect Offline, DataLoader, Email, ExactTarget, Import Wizard, List Views, Mobile, Opportunities, Packaging, Page Layouts, Pardot, Partner related list, Process Builder, Salesforce1, Search, Self-Service Portal, Social Networking, Visual Workflow, Workflow Rules, and more.
- Supported by popular AppExchange apps.
- Automatic conversion of Leads to Person Accounts when company name is left blank.
- Creating or editing a Person Account triggers only the Account workflow rules.
- During a search, people do not show up for both the Account and Contact records.
- Allows standard fields for both the Account and Contact to be placed on a single layout and saved in a single DML transaction.
- Can be hidden if not used.
- Information shows on Account and Contact reports
- Contact fields directly accessible via Apex through single Account instance.
- An organization can use both Person Accounts and Business Accounts at the same time.
Person Account Cons
- In some cases, native support may trail the initial release of new capabilities by a release cycle or two.
- Outlook Sync, Pardot, and ExactTarget need additional configuration.
- Some AppExchange packages might not be able to use person accounts effectively.
- Person accounts can only be merged with person accounts.
- Person accounts can’t have relationships with contacts.
By design
- Must leave Company field blank during Lead conversion or a regular Account will be created.
- Creating or editing a Person Account do not trigger contact workflow rules.
May be under consideration (Safe Harbor) - Native duplicate management can only be used with business accounts.
- Counts as two objects for storage (one Account and Contact per Person Account)
- Cannot be disabled; can only be hidden.
Obsolete - Already Delivered
More difficult to package components that reference Person Accounts in a package from a developer org.(Delivered in Winter’15)Formula fields at Account level cannot reference Contact fields (you can work around this by using a trigger to populate a custom lookup field from Account to Contact whenever a Person Account is created.(Delivered in Spring ‘13)Only show in searches for Accounts and not Contacts.(Delivered in Summer ‘16)
Deprecated Option
- -
Person Account users cannot self-register for a Customer Portal.(Customer Portal replaced by Communities.)
Platform Issue
Campaign Member functionality is restricted; Add to Campaign will not appear for Custom Report Types that relate a custom object to a Person Account.(This is a general issue with any Contact)
B2C 1:1 Model
The B2C 1-to-1 represents an individual by maintaining a link between an Account and Contact for that person.
1:1 Pros
- Doesn’t affect sharing model.
- Roll-up summary fields to Contact from Opportunity using Cross-Object formulas.
- Preferred contact information (email, phone, address fields).
- Uses standard SFDC objects.
1:1 Cons
- Unsupported, proprietary workaround that may need to be updated for new features.
- Requires two objects for storage (one Account and Contact per individual).
- Validation rules and required fields can restrict Account creation.
- Searching returns two records for each person - the Account and the Contact.
- Data shared between Account and Contact must be kept in sync.
- Requires multiple DML transactions to update both records.
- Triggers must be designed to save either Account or Contact information.
- Cannot use standard Account/Contact Add.
- It can be difficult to determine if an account is B2B or B2C because a B2B account with a single contact resembles a 1:1 B2C account.
- Merging Contact records with Salesforce.com’s standard Contact merge doesn’t currently work.
- Lead conversion works but does not allow you to merge to an existing Contact or create an Opportunity upon Lead conversion.
B2C Bucket Model
The Bucket Model represents individuals by linking Contacts to Accounts. Where they differ is that the bucket model links many Contacts to a single Account whereas the 1-to-1 model maintains one Account per Contact. This does conserve space, but impacts reporting capabilities.
Bucket Pros
- Doesn’t affect sharing model.
- Maintains standard SFDC schema.
- Uses less storage than either Person Accounts or the 1-to-1 model.
Bucket Cons
- Unsupported, proprietary workaround that may need to be updated for new features.
- Opportunity reports need to be created differently for B2C vs. B2B Accounts.
- At large data volumes multiple buckets need to be created to support reporting (reporting breaks down after 10,000 entries are added to one bucket).
- Standard account fields and capabilities must be replicated for B2C Contacts.
- May complicate lead conversion as prospects must be steered to correct bucket.
- Cannot easily group related Contacts and Activities.
- Difficult to explain to users.
- Contacts may inadvertently inherit fields from the bucket.
Household Model
- The Household model creates a bucket to group together one or more family members, and has similar same Pros and Cons.
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abstract fun runBlocking(): Unit
Start a single Khome application. This method blocks the current thread.


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