Django Highlights: User Models And Authentication (Part 1)
Django Highlights: User Models And Authentication (Part 1)
Django Highlights: User Models And Authentication (Part 1)
An Interview With Zach Leatherman: A SmashingConf Austin Speaker
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SmashingConf is coming to Austin, and in this post, we bring you an interview with one of our speakers, Zach Leatherman, who will be talking about type and font performance.
An Interview With Zach Leatherman: A SmashingConf Austin Speaker
Lorem Ipsum
SmashingConf is coming to Austin, and in this post, we bring you an interview with one of our speakers, Zach Leatherman, who will be talking about type and font performance.
An Interview With Zach Leatherman: A SmashingConf Austin Speaker
Lorem Ipsum
SmashingConf is coming to Austin, and in this post, we bring you an interview with one of our speakers, Zach Leatherman, who will be talking about type and font performance.
Our friends
How Smashing Magazine Manages Content: Migration From WordPress To JAMstack
An Interview With Zach Leatherman: A SmashingConf Austin Speaker
Lorem Ipsum
SmashingConf is coming to Austin, and in this post, we bring you an interview with one of our speakers, Zach Leatherman, who will be talking about type and font performance.
An Interview With Zach Leatherman: A SmashingConf Austin Speaker
Lorem Ipsum
SmashingConf is coming to Austin, and in this post, we bring you an interview with one of our speakers, Zach Leatherman, who will be talking about type and font performance.
An Interview With Zach Leatherman: A SmashingConf Austin Speaker
Lorem Ipsum
SmashingConf is coming to Austin, and in this post, we bring you an interview with one of our speakers, Zach Leatherman, who will be talking about type and font performance.
A complete guide
Article
Lead Article
PERSON OF THE WEEK
Erica Stanley (@ericastanley) is a Senior Research Engineering Manager at Mozilla, entrepreneur, and tech diversity, equity and inclusion advocate. Working passionately towards gender and multicultural inclusion in tech, Erica co-founded the Atlanta network of Women Who Code, where she leads new developer workshops and organizes monthly tech talks, hack nights, and networking events for women in tech. To help improve strategies around diversity and inclusion, she also collaborates with companies within the Atlanta tech community and sits on the advisory board of 100 Girls of Code. Thank you for everything you do for the community, dear Erica!
PERSON OF THE WEEK
Erica Stanley (@ericastanley) is a Senior Research Engineering Manager at Mozilla, entrepreneur, and tech diversity, equity and inclusion advocate. Working passionately towards gender and multicultural inclusion in tech, Erica co-founded the Atlanta network of Women Who Code, where she leads new developer workshops and organizes monthly tech talks, hack nights, and networking events for women in tech. To help improve strategies around diversity and inclusion, she also collaborates with companies within the Atlanta tech community and sits on the advisory board of 100 Girls of Code. Thank you for everything you do for the community, dear Erica!
PERSON OF THE WEEK
Erica Stanley (@ericastanley) is a Senior Research Engineering Manager at Mozilla, entrepreneur, and tech diversity, equity and inclusion advocate. Working passionately towards gender and multicultural inclusion in tech, Erica co-founded the Atlanta network of Women Who Code, where she leads new developer workshops and organizes monthly tech talks, hack nights, and networking events for women in tech. To help improve strategies around diversity and inclusion, she also collaborates with companies within the Atlanta tech community and sits on the advisory board of 100 Girls of Code. Thank you for everything you do for the community, dear Erica!
PERSON OF THE WEEK
Erica Stanley (@ericastanley) is a Senior Research Engineering Manager at Mozilla, entrepreneur, and tech diversity, equity and inclusion advocate. Working passionately towards gender and multicultural inclusion in tech, Erica co-founded the Atlanta network of Women Who Code, where she leads new developer workshops and organizes monthly tech talks, hack nights, and networking events for women in tech. To help improve strategies around diversity and inclusion, she also collaborates with companies within the Atlanta tech community and sits on the advisory board of 100 Girls of Code. Thank you for everything you do for the community, dear Erica!
PERSON OF THE WEEK
Erica Stanley (@ericastanley) is a Senior Research Engineering Manager at Mozilla, entrepreneur, and tech diversity, equity and inclusion advocate. Working passionately towards gender and multicultural inclusion in tech, Erica co-founded the Atlanta network of Women Who Code, where she leads new developer workshops and organizes monthly tech talks, hack nights, and networking events for women in tech. To help improve strategies around diversity and inclusion, she also collaborates with companies within the Atlanta tech community and sits on the advisory board of 100 Girls of Code. Thank you for everything you do for the community, dear Erica!
PERSON OF THE WEEK
Erica Stanley (@ericastanley) is a Senior Research Engineering Manager at Mozilla, entrepreneur, and tech diversity, equity and inclusion advocate. Working passionately towards gender and multicultural inclusion in tech, Erica co-founded the Atlanta network of Women Who Code, where she leads new developer workshops and organizes monthly tech talks, hack nights, and networking events for women in tech. To help improve strategies around diversity and inclusion, she also collaborates with companies within the Atlanta tech community and sits on the advisory board of 100 Girls of Code. Thank you for everything you do for the community, dear Erica!
PERSON OF THE WEEK
Erica Stanley (@ericastanley) is a Senior Research Engineering Manager at Mozilla, entrepreneur, and tech diversity, equity and inclusion advocate. Working passionately towards gender and multicultural inclusion in tech, Erica co-founded the Atlanta network of Women Who Code, where she leads new developer workshops and organizes monthly tech talks, hack nights, and networking events for women in tech. To help improve strategies around diversity and inclusion, she also collaborates with companies within the Atlanta tech community and sits on the advisory board of 100 Girls of Code. Thank you for everything you do for the community, dear Erica!
Featured Book
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An Interview With Zach Leatherman: A SmashingConf Austin Speaker
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An Interview With Zach Leatherman: A SmashingConf Austin Speaker
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November 22nd, 2022 — Josh
here do the experts hang out?
When I first started eating my computing cereal I thought they congregated on Quora, and so I read it like a madman while on the train. That wasn't quite right, even though Alan Kay seems to like posting on Quora for some reason. I also wondered if that was them talking about apples in the Java programming tutorials on YouTube.
Then I thought all of the experts were dead. I could only find them in books or on defunct web pages only viewable through the Wayback Machine. I read legends about them on Eric Raymond's website and in Steven Levy's "Hackers: Heroes of the Computer Revolution". I found myself in Fravia's fortress but I was alone. I even stumbled onto the sea of spam and wisdom that was Usenet, hot on the trail of Mark V. Shaney's schizophrenic postings, but there was nobody here.
At some point I fell head first into the blogosphere, where many Internet homesteaders mused about various topics dear to them. I learned a lot, but I was still lonely spending my time peering into people's windows. Recordings of talks on YouTube were a bit more lively but shared the same problem.
I considered the possibility that my professors at school were the experts, but was quickly disillusioned by how prolific most were at reading off of slides for 45 minutes.
I gathered hundreds of whitepapers that are sitting unopened collecting spacedust in my digital closet. I'll let you know if the experts are in there, the tentative deadline is somewhere in the next couple of decades.
I finally succumbed to reading the orange website on a daily basis, though I have mixed feelings about it. Well, Everyone's a Critic. An expert... usually not.
My moka pot of a brain has begun to sputter, so let me discuss another form of media which I've really come to enjoy.
I had to somewhat contort the order of things above so I could discuss mailing lists last, as that's what I intended this post to be about (asking for mailing list recommendations).
A few years ago, at the recommendation of Doug McIlroy, I subscribed to the TUHS mailing list (and shortly after to the COFF list). These are two forums where experts and interested parties discuss UNIX history (Rob Pike, Doug McIlroy, and Ken Thompson have occasionally participated). Although for the first few months I could not understand what was being said, I got a lot from being exposed to this atmosphere. There's something great about sitting in on a room of knowledgeable people candidly talking to one another, it's different from tones of writing you'd find elsewhere. The implied level of competence required for participation gives people the freedom to speak naturally.
I'm also subscribed to the Groff mailing list, which is equally as interesting (though I'm still not fully over that initial learning curve). Reading G. Branden Robinson's deep excursions into even the most modest issues is inspirational, I've learned a lot.
Another reason that mailing lists are cool is that they come to you -- I wake up to a few interesting messages in my inbox each day. The same could be said about RSS feeds, but I haven't gotten around to using them yet :-). The other part of this is that the conversation is happening in real time, which is something my brain is more receptive to. I've also neglected to mention a most important point, which is that you can actually participate in these discussions!
So, it is with the highest enthusiasm that I recommend to you these mailing lists. Are there any mailing lists which I haven't mentioned that you enjoy? I'd be really happy to hear about them if you wanna share, my email is josh [at] josh8.com
.
I'm excited to find other hyper and hypo-venues to explore and siphon information from. There must be others, both with living experts and dead ones.
The lyf so short, the craft so long to lerne!


{% extends "modules/gci/form_base.html" %} {% comment %} Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. {% endcomment %} {% block stylesheets %} {{ block.super }} {% endblock stylesheets %} {% block form_button %}
{% endblock form_button %} {% block synchronous_scripts %} {{ block.super }} {% endblock synchronous_scripts %} {% block dependencies %} [ dep.melange.autocomplete, dep.jqueryui.sortable, dep.uniform, dep.melange.dynamicoptions, null, tc( "/soc/content/{{ app_version }}/js/templates/modules/gci/program/base.js", { label: "{{ forms.0.fields.task_types.label }}", initial: '{{ forms.0.task_types_json|safe }}' } ) ] {% endblock dependencies %}


Personalities
tell powerful stories.
Mattr brings you the clearest, most colorful picture of your brand audience, allowing you to truly understand who they are and connect with them like never before.
Get to know your audience.
Request a private beta invitation.
The App
Mattr allows you to build a more complete view of your social media through a comprehensive set of segmentation, comparison, monitoring, and visualization tools. Explore our Features to learn more.
Audience Personality Segments
Decide how you want to look at your audience, based on our Unique Personality Type Analysis and demographics.
Persona Builder
Combine Personality Traits and Demographic information to create Audience Personas that make sense for your business.
Engagement Response by Persona
Which of your social media activities are attracting the audience engagement you're looking for? See a segmented report on a per-post basis.
Social Brand Benchmarking
See how your brand's audience compares to that of your competition, or your industry. Choose what you want to compare and then view the comparison.
Sentiment Variance
Knowing that your audience is 'upbeat' just isn't enough. You need to know if they're more upbeat about your brand than they are about other things.


PRIVINE- naphazoline hydrochloride spray
Insight Pharmaceuticals
Disclaimer: Most OTC drugs are not reviewed and approved by FDA, however they may be marketed if they comply with applicable regulations and policies. FDA has not evaluated whether this product complies.
Active ingredient (per spray)
Naphazoline HCl, USP 0.05%
Purpose
Nasal decongestant
Uses
for temporary relief of nasal congestion
- due to a cold
- due to hay fever or other upper respiratory allergies
- shrinks swollen membranes so you can breathe more freely
Warnings
Ask a doctor before use if you have
- heart disease
- thyroid disease
- high blood pressure
- diabetes
- trouble urinating due to an enlarged prostate gland
When using this product
- do not exceed recommended dosage
- temporary discomfort such as burning, stinging, sneezing, or an increase in nasal discharge may occur
- do not use for more than 3 days. Frequent or prolonged use may cause nasal congestion to come back or get worse.
- use only as directed
Stop use and ask a doctor if symptoms persist
The use of this container by more than one person may spread infection
If pregnant or breast-feeding, ask a health professional before use.
Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center right away.
Directions
- adults and children 12 years of age and over: 1 or 2 sprays in each nostril not more often than every 6 hours.
- children under 12 years of age: consult a doctor.
Other information
store at room temperature 20°–25°C (68°–77°F).
Inactive Ingredients
benzalkonium chloride, dibasic sodium phosphate, disodium edetate, monobasic sodium phosphate, purified water and sodium chloride.
Questions
Call 1-800-344-7239 or write to Consumer Affairs.
Distributed by:
INSIGHT Pharmaceuticals Corp.
Langhorne, PA 19047-1749
PRINCIPAL DISPLAY PANEL - 20 mL spray label
69853C
LF-572
FAST RELIEF
OF STUFFY NOSE
Privine®
nasal spray
naphazoline HCl, USP
Nasal Decongestant
Do not use if the plastic band on the
bottle cap is missing or damaged.
Store between 20°–25°C (68°–77°F).
0.66 fl oz (20 mL)
PRINCIPAL DISPLAY PANEL - 20 mL spray carton
Fast
relief
of
stuffy
nose
Privine®
nasal spray
naphazoline HCl, USP
Nasal Decongestant
Important:
Do not use if
the plastic band
on the bottle
cap is missing
or damaged.
0.66 fl oz (20mL)


Abstract:
Glacial isostatic adjustment (GIA) represents a source of uncertainty for
ice sheet mass balance estimates from the Gravity Recovery and Climate
Experiment (GRACE) time-variable gravity measurements. We evaluate
Greenland GIA corrections from Simpson et al. (2009), A et al. (2013) and Wu
et al. (2010) by comparing the spatial patterns of GRACE-derived ice mass
trends calculated using the three corrections with volume changes from
ICESat (Ice, Cloud, and land Elevation Satellite) and OIB (Operation
IceBridge) altimetry missions, and surface mass balance (SMB) products from
the Regional Atmospheric Climate Model (RACMO). During the period September
2003–August 2011, GRACE ice mass changes obtained using the Simpson
et al. (2009) and A et al. (2013) GIA corrections yield similar spatial
patterns and amplitudes, and are consistent with altimetry observations and
surface mass balance data. The two GRACE estimates agree within 2% on
average over the entire ice sheet, and better than 15% in four
subdivisions of Greenland. The third GRACE estimate corrected using the
Wu et al. (2010) GIA shows similar spatial patterns, but produces an
average ice mass loss for the entire ice sheet that is 64 – 67 Gt
yr-1 smaller. In the Northeast the recovered ice mass change is
46 – 49 Gt yr-1 (245–270%) more positive than
that deduced from the other two corrections. By comparing the spatial and
temporal variability of the GRACE estimates with trends of volume changes
from altimetry and surface mass balance from RACMO, we show that the Wu et
al. (2010) correction leads to a large mass increase in the Northeast that
is inconsistent with independent observations.


Forward Iterator
|
|
| Category: iterators |
Component type: concept |
Description
A Forward Iterator is an iterator that corresponds to the usual
intuitive notion of a linear sequence of values. It is possible to use
Forward Iterators (unlike Input Iterators and Output Iterators)
in multipass algorithms. Forward Iterators do not, however, allow
stepping backwards through a sequence, but only, as the
name suggests, forward.
A type that is a model of Forward Iterator
may be either mutable or immutable, as defined in the Trivial Iterators
requirements.
Refinement of
Input Iterator, Output Iterator
Associated types
The same as for Input Iterator
Notation
|
X
|
A type that is a model of Forward Iterator
|
|
T
|
The value type of X
|
|
i, j
|
Object of type X
|
|
t
|
Object of type T
|
Definitions
Valid expressions
Forward Iterator does not define any new expressions beyond those
defined in Input Iterator. However, some of the restrictions
described in Input Iterator are relaxed.
|
Name
|
Expression
|
Type requirements
|
Return type
|
|
Preincrement
|
++i
|
|
X&
|
|
Postincrement
|
i++
|
|
X
|
Expression semantics
Forward Iterator does not define any new expressions beyond those
defined in Input Iterator. However, some of the restrictions
described in Input Iterator are relaxed.
|
Name
|
Expression
|
Precondition
|
Semantics
|
Postcondition
|
|
Preincrement
|
++i
|
i is dereferenceable
|
i points to the next value
|
i is dereferenceable or past-the-end. &i == &++i. If i == j, then
++i == ++j. [1]
|
|
Postincrement
|
i++
|
i is dereferenceable
|
Equivalent to {X tmp = i; ++i; return tmp;}
|
i is dereferenceable or past-the-end. [1]
|
Complexity guarantees
The complexity of operations on Forward Iterators is
guaranteed to be amortized constant time.
Invariants
Models
Notes
[1]
The restrictions described in Input Iterator have been
removed. Incrementing a forward iterator does not invalidate copies
of the old value and it is guaranteed that, if i and j are
dereferenceable and i == j, then ++i == ++j. As a consequence
of these two facts, it is possible to pass through the same
Forward Iterator twice.
See also
Input Iterator, Output Iterator, Bidirectional Iterator,
Random Access Iterator, Iterator overview
Copyright © 1996 Silicon Graphics, Inc.
|


Good Coffee
Home
Introduction
Contact
Good Coffee Company.
We make good coffee from quality coffee beans.
Learn more


- Client-side programming: HTML5, and XHTML, including CSS, and JavaScript
- HTML5 and XHTML
- HTML5 and XHTML Books and Documentation
- Books
- Documentation: Tables of special characters (apostrophes, accented letters, etc.)
- Documentation (General): Tables of tags, elements, and attributes; also Doctypes and MIME types
- Doctypes, MIME types, and preview of same in HTML5 and XHTML
- Other documentation - see also Other Links and Resources for HTML5 and XHTML
- Tutorials and Articles for HTML, HTML5 and XHTML
- Basic HTML Tutorials and Elementary Articles
- Basic HTML Tutorials
- Articles on Specific Basic Topics: tables, fonts, lists, forms
- XHTML Tutorials and Articles
- HTML5 including, tutorials, and more advanced articles
- HTML5 Tutorials and General Articles
- HTML5 Articles, including specific features new to HTML5
- Forms, Input Types and Form Validation
- Semantic Markup including the article and section tags
- Canvas and SVG
- More Advanced Articles
- Links and Resources for HTML and XHTML
- Validators and Linters for HTML5 and XHTML
- Editors
- Link Checkers
- Other Tools, including for malware detection, outlining and performance
- Browsers including issues on standards compliance
- Other General Links and Resources for HTML5 and XHTML
- Information on Color and Graphics
- Page Design
- Site Design
- Tools for Accessibility - Color Blind Viewers etc
- Search Engines and Getting Found
- Note: Best practices for DHTML use the DOM; both methods are in the JavaScript section (see Articles — advanced)
- AJAX is in the XML Extensions section
- JS Books and Documentation
- JS Tutorials and Articles
- Basic JS Tutorials
- Basic JS Articles
- Advanced JS Tutorials and Articles — General
- Advanced JS Articles — Specific Topics - advanced (DOM, DHTML, Event Model, Cookies etc.)
- Functions, closures and this
- Objects and prototypical inheritance
- AJAX without jQuery
- ES6 and beyond
- Miscellaneous
- jQuery, Express and other front end libraries and frameworks
- jQuery
- jQuery Books and Documentation
- jQuery tutorials and articles (including UI, Mobile, AJAX and plug—ins)
- Express and other front end libraries and frameworks
- Node.js (This is actually under Server Side programming)
- Debuggers, Linters, Testing and Error Catching
- Style Guides
- Ajax and Other Frameworks


Animated gif with background dispose method.


Three 5G launch delayed until Q1 2020
by Steve McCaskillThree 5G launch delayed until Q1 2020
Three had hoped to launch mobile 5G by end of year
(Image credit: Three)
Three has delayed the launch of 5G mobile services on its network until early next year, saying it needs more time to get it ready.
The operator launched Fixed Wireless Access (FWA) services on 5G in central London earlier this August and intended to offer mobile services in 25 towns and cities before the end of 2019.
It said that although it had doubled the number of 5G masts in the capital, and upgraded more than 1,400 sites to 5G already, it wanted to make sure all elements of the network were in order before it launched commercially.
- Three: Our 5G claims are based on fact
- Three CEO: Capacity not speed is benefit of 5G
- Keep up with the latest 5G in the UK
Three 5G launch delay
This includes backhaul, getting planning permission from landlords, and migrating more customers to its cloud core network. It is now expected that Three 5G will go live in Q1 2020.
“Some of these components are more time consuming and complex than others, and, as a result, our 5G roll out is slightly behind our original plan,” said Three.
EE was the first mobile operator to launch 5G in May, with Vodafone going live later in the summer, and O2 switching its 5G network last month. Three was also the last UK operator to offer 4G mobile services, but a late launch is unlikely to harm its long-term prospects.
5G coverage from its rivals is still limited while there isn’t the same capacity crunch that made 4G so desirable back in 2012. UK operators have been among the first to launch 5G whereas they were comparatively late with 4G.
Three is the UK’s smallest mobile operator but believes 5G will allow it to lead the market for the first time thanks to its spectrum holdings. Thanks to auction victories and the acquisition of UK Broadband, Three says it has the most usable 5G spectrum of any UK network and that it has 100 MHz of contiguous 3.4GHz airwaves that will allow it to offer the fastest, most reliable connection.
All Three users with a compatible phone will be able to access 5G at no extra cost.
- Here are the best Three mobile phone deals for November 2019


Stack offers a clean and contemporary look to suit a range of purposes from corporate, tech startup, marketing site to digital storefront.
Ideal for large and small organisations
A highly adaptable look that's simple
Following BEM conventions for readability


➢ Bulk opt in file
Within this module we will demonstrate how to bulk opt in/join employees mid pay reference period (PRP)
During the month Lisa Porter and Neil Brundish contacted ABC Employer and confirmed that they wished to opt in.
AEWS uses the payroll close date to determine which PRP the employee should be assessed to ensure that they still meet the criteria to opt in.
AEWS assumes that an employee who is either an eligible or non eligible jobholder with contributions below the regulatory minimum should join the scheme.
➢ Recorded the date the opt in notice was received from the employees (effective date)
➢ Completed the bulk opt in file
➢ Uploaded the .csv file to AEWS mid PRP
➢ Did not update their payroll existing member indicator (unless they joined the scheme)
We have now successfully processed the opt in for these employees, AEWS will now assess these employees in the correct PRP to ensure they still meet the criteria. AEWS will confirm whether the opt in has been confirmed and produce the relevant communication.
➢ Completing the bulk opt in process does not opt that employee into the current PRP, AEWS follows the regulations and diaries the employee for assessment in the relevant PRP.
➢ Do not update the existing member indicator unless the employee has either joined or the Opt in has been confirmed by AEWS
➢ Section 7 of the user guide.


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Barnes Spit-Fire TMZ Muzzleloading Bullets 50 Cal Sabot 45 Cal 250
Barnes TMZ Bullets feature a boattail design for exceptional long range performance in a muzzleloader bullet. The polymer tip and pure copper body create a .
http://www.midwayusa.com/product/462267/barnes-spit-fire-tmz-muzzleloading-bullets-50-caliber-sabot-with-45-caliber-250-grain-polymer-tip-boat-tail-lead-free-box-of-24Fifty Caliber Shooters Association
Fifty Caliber Information, 50 Caliber Forums, 50 BMG, FCSA Information, FCSA . Lee Rasmussen set a new .50 BMG Single Target World Record at the FCSA .
http://www.fcsa.org/In Defense of the .50 Caliber Round | The Awl
Feb 25, 2011 . Inherent in the argument against firing .50 caliber rounds at protesters is an admission that smaller caliber rounds are permissible. I've seen .
http://www.theawl.com/2011/02/in-defense-of-the-50-caliber
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DVIDS - Video - Marines fire M2 .50 Caliber Machine Gun during ...
Jul 26, 2011 . B-Roll of Marines firing the M2 .50 Caliber Machine Gun as well as taking a class on the M240 Machine Gun during Javelin Thrust 2011.
http://www.dvidshub.net/video/121440/marines-fire-m2-50-caliber-machine-gun-during-javelin-thrust-2011-prime-cuts -
How far can a 50 caliber shoot
How far will a 50 caliber caliber travel? You will have to specify if you are referring to black powder, rim fire or center fire and the weight of the projectile .
http://wiki.answers.com/Q/How_far_can_a_50_caliber_shoot -
US Marine fires an M2 50-caliber machine gun Poster from Zazzle.com
Non-framed orders made in 24 hours. US Marine fires an M2 50-caliber machine gun Poster created by stocktrek. Order as shown, or change the print size or .
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50 Cal Sniper Rifle on Exploding Targets | Military.com
Jun 15, 2012 . This is a very cool video of a tall blonde girl shooting a 50 caliber BMG sniper rifle blowing up 5 lbs of . Snipers in Afghanistan Fire .50 Rifles .
http://www.military.com/video/guns/rifles/50-cal-sniper-rifle-on-exploding-targets/1691665588001/ -
Guy hit in head with .50 caliber ricochet - YouTube
Jun 28, 2007 . I used? to be a sniper until I took a 50 cal to my earmuffs . yes as a matter of fact i was in army? 14 yr,s,And i know never shoot at steel from that .
http://www.youtube.com/watch?v=0ABGIJwiGBc


Hi, I am Ushanth
I am a 4th year Computer Science undergradute student
I study at the University Of Victoria
I love to code and build softwares!
Java | HTML5 | JavaScript | SQL | Visual Basic | C | C++ | C# | Python | CSS | AVR Assembly | JQuery | AJAX
Node.js | Angular.js | ASP.Net | Bootstrap | Jekyll
Openshift | Microsoft Azure | Linode
MS Visual Studio | MS Office 365 | Proto.io | Adobe Photoshop CC | XCode | SQL Developer | Poser Debut | Studio 3T
The only source of knowledge is Experience ~ Albert Einstein
AXYS Technologies Inc. (AXYS) is an ISO 9001-2008 registered Canadian company with over 40 years’ experience in the Design, Manufacture and Deployment of remote environmental monitoring systems worldwide. AXYS applies its extensive knowledge and experience to marine, freshwater, offshore wind resource assessment, and land-based monitoring systems that measure aquatic, oceanic and atmospheric parameters.
I worked as a Software Developer for programming controllers in RESTFUL API with C# for data extraction from the sever present in Azure cloud. I used off shore environmental data such as windspeed, wave height and sea water temperature for implementing meaningful graphs using highcharts that can be displayed in the AXYS web portal. Additionally, I used JQuery and AJAX for web development and worked in an agile software development environment.
The Environmental Assessment Office (EAO) is a neutrally administered office that is required by law to undertake rigorous, thorough reviews of major projects in British Columbia. These reviews provide significant opportunities for Aboriginal groups, government agencies and the public to influence the outcome of environmental assessments by providing input on the potential for environmental, economic, social, heritage and health effects from a proposed project.
As a Junior software developer, I was working on multiple government web applications developed using MEAN stack. One of the largest projects was EPIC (Environemental Assessment Office Project Information Collaboration) web app. My background in computer science and experience as a software developer gave me deep insight into the software development processes. I have discovered and fixed major bugs and defects in the EPIC web application. Moreover, I have gained experience implementing new functionalities using Angular.js. My interest and passion towards DevOps has helped to gain invaluable experience working in Openshift cloud platform.
I also participated in business area analysis and business systems design projects. Moreover, I ensured data quality and integrity by analyzing processing logs and system reports and worked with users to identify and resolve common errors and omissions.


Well maintained modern home in Midleton
Well-maintained and modern, this four-bed semi at 9 Meadowlands Broomfield in Midleton is getting viewings not just from trading-up buyers but also from young couples who want to skip the smaller first-house stage.
Clare O’Sullivan of Sherry FitzGerald O’Donovan says the €285,000 asking price is making it attractive to both types of buyers and that the first-time buyers who are looking at it like the idea of getting the space they need now rather than having to move again later.
Noting that there aren’t huge numbers of four bed semis available in Midleton she says that this one offers close to 1,300sq ft of accommodation and is both well finished and tastefully decorated.
“It’s in the Meadowlands development which was built in the early 2000s and has matured beautifully,” she says adding that it’s within a five-minute drive from the town centre and the train station and also offers easy access to the N25.
Accommodation includes a living room with a solid fuel stove as well as a kitchen-diner with Shaker-style units and a breakfast counter.
There’s also a family room/dining room, a utility room and a guest WC.One of the bedrooms has an en-suite.
Outside there’s a west-facing garden with a raised decking area.
The most recent sale of a four bed semi in Meadowlands seems to be of No 20 which sold for €300,000, €15,000 above its asking price in May.
VERDICT: Because it’s a modern, well-looked-after four-bed semi, it’s expected to attract good interest.


Trader Auzendorff:
Welcome! Just mention any weapon, any weapon at all -- we'll have it! Now that the great Lord takes good care of Dwarven traders like us, we can again deliver the best of the best. The Elmore royal family are surely pearls among swine!
Buy/Sell/Refund.
Ask about the local lord and tax rate.
Quest


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Files CCore/inc/TextLabel.h CCore/src/TextLabel.cpp
TextLabel is a lightweight text representing class. It does not hold any resources and has no life-time limit (destructor is trivial). We need such class, because it can be used in such context, where memory allocation is impossible (for example, the memory heap is not initialized yet).
using TextLabelFunc = StrLen (*)(Handle ctx,PtrLen<char> buf) ; class TextLabel { .... public: // constructors TextLabel(); TextLabel(const char *persistent_zstr); TextLabel(TextLabelFunc func,Handle ctx); TextLabel(EnumType e); // methods StrLen getStr(PtrLen<char> buf) const; // print object using PrintOptType = StrPrintOpt ; void print(PrinterType &out,PrintOptType opt) const; };
If you have a TextLabel object, you can build its string, using the method getStr(), you should supply a temporary buffer, where the string will possibly be constructed. You can also print the string, string print attributes are supported. The method print() uses a temporary buffer of the length TextBufLen. We assume that the string, represented by a TextLabel object, has a reasonably small length.
There are four ways to build a TextLabel object.
You can construct an empty string object using the default constructor.
You can build a TextLabel from a persistent C zero-terminated string (i.e. from a string literal).
The third way is to build a TextLabel from an enum. The enum value range must fit in the int value range. The function GetTextDesc() must be defined for this enum.
enum E { E1, E2, E3 }; const char * GetTextDesc(E e); .... TextLabel label(E1);
Finally, the more general way is to build a TextLabel from the TextLabelFunc and the Handle. Just remember, the handle must be persistent, it cannot have a limited life-time.
The next class is NumTextLabel.
unsigned GetTextLabelNumber(unsigned &Next); template <TextLabelType T> class NumTextLabel : public TextLabel { .... public: NumTextLabel(); };
It is designed to generate such labels like "Sem1", "Sem2", ... . Use it as following:
class Name
{
static Mutex NextMutex;
static unsigned Next;
public:
static const char * GetText() { return "ObjName"; }
static unsigned GetNumber() { Mutex::Lock lock(NextMutex); return GetTextLabelNumber(Next); }
};
Mutex Name::NextMutex;
unsigned Name::Next=0;
NumTextLabel<Name> label; // "ObjName1" , "ObjName2" , ...


Sri Lanka to use Wolbachia bacteria to control Aedes mosquitoes
by News DeskBy NewsDesk @bactiman63
Sri Lankan health officials have reportedly taken steps to introduce Wolbachia bacteria into the environment starting in February.
The pilot project is to be carried out in Colombo and Nugegoda. Bacteria are to be released in 25 Grama Niladhari Divisions around Colombo, Deputy Director General of the Ministry of Health Dr. Paba Palihawadana said revealed at a media briefing in Colombo Saturday.
The bacteria will be introduced after years of laboratory testing and field testing.
The bacteria is being used successfully in 12 countries, including Brazil, Colombia, Indonesia, the Pacific Islands, Vietnam, India, and Mexico.
Government officials say Wolbachia-carrying mosquitoes are bred and in partnership with local communities, released them into areas affected by mosquito-borne diseases.When Aedes aegypti mosquitoes carry Wolbachia, the bacteria competes with viruses like dengue, Zika, chikungunya and yellow fever reducing the transmission of the virus to the diseases.
Sri Lanka has recorded more than 85,000 dengue fever cases in 2019 to date.
- Measles: Samoa death toll rises to 70
- Eastern Equine Encephalitis 2019: The outbreak and the select agent dilemma
- Polio in Malaysia: 1st case reported in 27 years
- Wisconsin: Health officials investigate multiple adenovirus cases on college campuses
- China: Dozens of Brucellosis cases reported at Lanzhou institute
- Israel medical experts prepare for deployment to Samoa


Lvc.Infra.DecSolve
Require Import Util Computable Get.
Ltac dec_solve := solve [ left; econstructor; eauto
| let H := fresh "H" in right; intro H; inv H; repeat get_functional; isabsurd; eauto ].
Tactic Notation "dec_right" :=
let A := fresh "A" in
right; intro A; inv A; repeat get_functional; eauto.
Tactic Notation "ensure" constr(P) := decide P; [ | dec_right].
Ltac dec_solve := solve [ left; econstructor; eauto
| let H := fresh "H" in right; intro H; inv H; repeat get_functional; isabsurd; eauto ].
Tactic Notation "dec_right" :=
let A := fresh "A" in
right; intro A; inv A; repeat get_functional; eauto.
Tactic Notation "ensure" constr(P) := decide P; [ | dec_right].


An enthusiastic Junior Web Developer looking for a new role to continue my passion for learning new technologies. I'm a quick learner, having developed the core of my coding skills in an intense environment for the last 3 months. I am business minded and always on the lookout for new ways to innovate both old and new.
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Below are the links in grid format and you will love them


[gecode-users] probability to apply constraint
Richard Portelli
richard.portell at gmail.com
Mon Jun 9 14:48:16 CEST 2014
Hello,
Is it possible to apply a constraint with a probability associated?
For example I have an array of 10 integers which has two constraint :
1) The sum should be equal to 100;
2) The numbers of even array index should be equal to 0.
To the 2) constraint, I would like to add a probability saying that the
constraint apply in 80% of the cases.
I know that what could work would be for each even array index to pick a
number between 0 and 100 and apply the rule dynamically depending on the
number picked (<80 -> apply, otherwise doesn'y apply).
However, I would like to know if there would be a more elegant way.
Cheers
Richard
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Labour MP Julie Elliott's office smashed up in 'deliberate' late night attack
EXCLUSIVE: The office of Julie Elliott, MP for Sunderland Central, was ambushed at around 10pm on Saturday night, just a few days after the general election campaign kicked off
by Tanveer Mann, https://www.facebook.com/tanveermannjournalistA Labour MP's constituency office windows have been smashed in a "deliberate" late night attack over the weekend.
The office of Julie Elliott, MP for Sunderland Central, was ambushed at around 10pm on Saturday night, just a few days after the general election campaign kicked off.
Mrs Elliott, who is preparing to stand in the upcoming election on December 12, called the attack 'unsettling' and said it was 'not acceptable'.
She told Mirror Online : "It's clear it was a deliberate attack. People who do this are just bullies but I won't cower down to it.
"It is not acceptable but my first priority is that my staff are okay.
"We just have to try to make sure police can catch whoever did this. I don’t mind anyone having a political disagreement with me but this is not how we behave."
Mrs Elliott said she was relieved that the attack happened on a Saturday when her staff don't work.
She would typically have had around six members of staff in the office if it had been a weekday.
The Labour MP said: "It's been quite encouraging on social media to see supportive messages from across the party spectrum. Local Tories have openly said it is not good. "
Mrs Elliot was first elected as MP for Sunderland Central in 2010.
She has also served as chair of the All-Party Parliamentary Group for Rugby Union and vice-chair of the All-Party Parliamentary Group on State Pension Inequality for Women.
Last week, MPs voted to hold the first general election during winter time since February 1974, in order to break the parliamentary deadlock over Brexit .
Since then MPs have been warned not to go out alone or after dark during the campaign.
Discussing her own security, Elliott said: "Extra security for female MPs has been a part of our daily life for the last couple of years. It is very, very sad that we have to watch everything that we do, but we have to take steps to stay safe."
Elliott's son Miles also tweeted about the attack, saying: "My mam’s office was bricked on Saturday.
"Politicians and their staff are not fair game, they are people doing their jobs to the best of their ability and with good intentions.
"Disagree with them and campaign against them by all means but haway - we’re better than this."
A spokesperson for Northumbria Police told Mirror Online: "Shortly before 11.15pm on Saturday (November 9), police received a report of criminal damage at an address on Norfolk Street, Sunderland.
“It was reported that a man had smashed two windows of the premises and was acting aggressively.
"Officers attended but the individual had already left the area.
“An investigation has been launched and enquiries are ongoing to trace those involved.
“We would like to reiterate that intentional acts of criminal damage are totally unacceptable and we will take appropriate action against anybody found responsible.”


| PERLREFTUT(1) | Perl Programmers Reference Guide | PERLREFTUT(1) |
Fortunately, you only need to know 10% of what's in the main page to get 90% of the benefit. This page will show you that 10%.
Why would you want a hash of lists? Let's take a simple example: You have a file of city and country names, like this:
Chicago, USA Frankfurt, Germany Berlin, Germany Washington, USA Helsinki, Finland New York, USA
and you want to produce an output like this, with each country mentioned once, and then an alphabetical list of the cities in that country:
Finland: Helsinki. Germany: Berlin, Frankfurt. USA: Chicago, New York, Washington.
The natural way to do this is to have a hash whose keys are country names. Associated with each country name key is a list of the cities in that country. Each time you read a line of input, split it into a country and a city, look up the list of cities already known to be in that country, and append the new city to the list. When you're done reading the input, iterate over the hash as usual, sorting each list of cities before you print it out.
If hash values couldn't be lists, you lose. You'd probably have to combine all the cities into a single string somehow, and then when time came to write the output, you'd have to break the string into a list, sort the list, and turn it back into a string. This is messy and error-prone. And it's frustrating, because Perl already has perfectly good lists that would solve the problem if only you could use them.
A reference is a scalar value that refers to an entire array or an entire hash (or to just about anything else). Names are one kind of reference that you're already familiar with. Each human being is a messy, inconvenient collection of cells. But to refer to a particular human, for instance the first computer programmer, it isn't necessary to describe each of their cells; all you need is the easy, convenient scalar string "Ada Lovelace".
References in Perl are like names for arrays and hashes. They're Perl's private, internal names, so you can be sure they're unambiguous. Unlike a human name, a reference only refers to one thing, and you always know what it refers to. If you have a reference to an array, you can recover the entire array from it. If you have a reference to a hash, you can recover the entire hash. But the reference is still an easy, compact scalar value.
You can't have a hash whose values are arrays; hash values can only be scalars. We're stuck with that. But a single reference can refer to an entire array, and references are scalars, so you can have a hash of references to arrays, and it'll act a lot like a hash of arrays, and it'll be just as useful as a hash of arrays.
We'll come back to this city-country problem later, after we've seen some syntax for managing references.
If you put a "\" in front of a variable, you get a reference to that variable.
$aref = \@array; # $aref now holds a reference to @array $href = \%hash; # $href now holds a reference to %hash $sref = \$scalar; # $sref now holds a reference to $scalar
Once the reference is stored in a variable like $aref or $href, you can copy it or store it just the same as any other scalar value:
$xy = $aref; # $xy now holds a reference to @array $p[3] = $href; # $p[3] now holds a reference to %hash $z = $p[3]; # $z now holds a reference to %hash
These examples show how to make references to variables with names. Sometimes you want to make an array or a hash that doesn't have a name. This is analogous to the way you like to be able to use the string "\n" or the number 80 without having to store it in a named variable first.
Make Rule 2
"[ ITEMS ]" makes a new, anonymous array, and returns a reference to that array. "{ ITEMS }" makes a new, anonymous hash, and returns a reference to that hash.
$aref = [ 1, "foo", undef, 13 ]; # $aref now holds a reference to an array $href = { APR => 4, AUG => 8 }; # $href now holds a reference to a hash
The references you get from rule 2 are the same kind of references that you get from rule 1:
# This: $aref = [ 1, 2, 3 ]; # Does the same as this: @array = (1, 2, 3); $aref = \@array;
The first line is an abbreviation for the following two lines, except that it doesn't create the superfluous array variable @array.
If you write just "[]", you get a new, empty anonymous array. If you write just "{}", you get a new, empty anonymous hash.
Use Rule 1
You can always use an array reference, in curly braces, in place of the name of an array. For example, "@{$aref}" instead of @array.
Here are some examples of that:
Arrays:
@a @{$aref} An array reverse @a reverse @{$aref} Reverse the array $a[3] ${$aref}[3] An element of the array $a[3] = 17; ${$aref}[3] = 17 Assigning an element
On each line are two expressions that do the same thing. The left-hand versions operate on the array @a. The right-hand versions operate on the array that is referred to by $aref. Once they find the array they're operating on, both versions do the same things to the arrays.
Using a hash reference is exactly the same:
%h %{$href} A hash keys %h keys %{$href} Get the keys from the hash $h{'red'} ${$href}{'red'} An element of the hash $h{'red'} = 17 ${$href}{'red'} = 17 Assigning an element
Whatever you want to do with a reference, Use Rule 1 tells you how to do it. You just write the Perl code that you would have written for doing the same thing to a regular array or hash, and then replace the array or hash name with "{$reference}". "How do I loop over an array when all I have is a reference?" Well, to loop over an array, you would write
for my $element (@array) { ... }
so replace the array name, @array, with the reference:
for my $element (@{$aref}) { ... }
"How do I print out the contents of a hash when all I have is a reference?" First write the code for printing out a hash:
for my $key (keys %hash) { print "$key => $hash{$key}\n"; }
And then replace the hash name with the reference:
for my $key (keys %{$href}) { print "$key => ${$href}{$key}\n"; }
Use Rule 2
Use Rule 1 is all you really need, because it tells you how to do absolutely everything you ever need to do with references. But the most common thing to do with an array or a hash is to extract a single element, and the Use Rule 1 notation is cumbersome. So there is an abbreviation.
"${$aref}[3]" is too hard to read, so you can write "$aref->[3]" instead.
"${$href}{red}" is too hard to read, so you can write "$href->{red}" instead.
If $aref holds a reference to an array, then "$aref->[3]" is the fourth element of the array. Don't confuse this with $aref[3], which is the fourth element of a totally different array, one deceptively named @aref. $aref and @aref are unrelated the same way that $item and @item are.
Similarly, "$href->{'red'}" is part of the hash referred to by the scalar variable $href, perhaps even one with no name. $href{'red'} is part of the deceptively named %href hash. It's easy to forget to leave out the "->", and if you do, you'll get bizarre results when your program gets array and hash elements out of totally unexpected hashes and arrays that weren't the ones you wanted to use.
First, remember that "[1, 2, 3]" makes an anonymous array containing "(1, 2, 3)", and gives you a reference to that array.
Now think about
@a = ( [1, 2, 3], [4, 5, 6], [7, 8, 9] );
@a is an array with three elements, and each one is a reference to another array.
$a[1] is one of these references. It refers to an array, the array containing "(4, 5, 6)", and because it is a reference to an array, Use Rule 2 says that we can write $a[1]->[2] to get the third element from that array. $a[1]->[2] is the 6. Similarly, $a[0]->[1] is the 2. What we have here is like a two-dimensional array; you can write $a[ROW]->[COLUMN] to get or set the element in any row and any column of the array.
The notation still looks a little cumbersome, so there's one more abbreviation:
Instead of $a[1]->[2], we can write $a[1][2]; it means the same thing. Instead of "$a[0]->[1] = 23", we can write "$a[0][1] = 23"; it means the same thing.
Now it really looks like two-dimensional arrays!
You can see why the arrows are important. Without them, we would have had to write "${$a[1]}[2]" instead of $a[1][2]. For three-dimensional arrays, they let us write $x[2][3][5] instead of the unreadable "${${$x[2]}[3]}[5]".
1 my %table; 2 while (<>) { 3 chomp; 4 my ($city, $country) = split /, /; 5 $table{$country} = [] unless exists $table{$country}; 6 push @{$table{$country}}, $city; 7 } 8 for my $country (sort keys %table) { 9 print "$country: "; 10 my @cities = @{$table{$country}}; 11 print join ', ', sort @cities; 12 print ".\n"; 13 }
The program has two pieces: Lines 2-7 read the input and build a data structure, and lines 8-13 analyze the data and print out the report. We're going to have a hash, %table, whose keys are country names, and whose values are references to arrays of city names. The data structure will look like this:
%table +-------+---+ | | | +-----------+--------+ |Germany| *---->| Frankfurt | Berlin | | | | +-----------+--------+ +-------+---+ | | | +----------+ |Finland| *---->| Helsinki | | | | +----------+ +-------+---+ | | | +---------+------------+----------+ | USA | *---->| Chicago | Washington | New York | | | | +---------+------------+----------+ +-------+---+
We'll look at output first. Supposing we already have this structure, how do we print it out?
8 for my $country (sort keys %table) { 9 print "$country: "; 10 my @cities = @{$table{$country}}; 11 print join ', ', sort @cities; 12 print ".\n"; 13 }
%table is an ordinary hash, and we get a list of keys from it, sort the keys, and loop over the keys as usual. The only use of references is in line 10. $table{$country} looks up the key $country in the hash and gets the value, which is a reference to an array of cities in that country. Use Rule 1 says that we can recover the array by saying "@{$table{$country}}". Line 10 is just like
@cities = @array;
except that the name "array" has been replaced by the reference "{$table{$country}}". The "@" tells Perl to get the entire array. Having gotten the list of cities, we sort it, join it, and print it out as usual.
Lines 2-7 are responsible for building the structure in the first place. Here they are again:
2 while (<>) { 3 chomp; 4 my ($city, $country) = split /, /; 5 $table{$country} = [] unless exists $table{$country}; 6 push @{$table{$country}}, $city; 7 }
Lines 2-4 acquire a city and country name. Line 5 looks to see if the country is already present as a key in the hash. If it's not, the program uses the "[]" notation (Make Rule 2) to manufacture a new, empty anonymous array of cities, and installs a reference to it into the hash under the appropriate key.
Line 6 installs the city name into the appropriate array. $table{$country} now holds a reference to the array of cities seen in that country so far. Line 6 is exactly like
push @array, $city;
except that the name "array" has been replaced by the reference "{$table{$country}}". The "push" adds a city name to the end of the referred-to array.
There's one fine point I skipped. Line 5 is unnecessary, and we can get rid of it.
2 while (<>) { 3 chomp; 4 my ($city, $country) = split /, /; 5 #### $table{$country} = [] unless exists $table{$country}; 6 push @{$table{$country}}, $city; 7 }
If there's already an entry in %table for the current $country, then nothing is different. Line 6 will locate the value in $table{$country}, which is a reference to an array, and push $city into the array. But what does it do when $country holds a key, say "Greece", that is not yet in %table?
This is Perl, so it does the exact right thing. It sees that you want to push "Athens" onto an array that doesn't exist, so it helpfully makes a new, empty, anonymous array for you, installs it into %table, and then pushes "Athens" onto it. This is called autovivification--bringing things to life automatically. Perl saw that the key wasn't in the hash, so it created a new hash entry automatically. Perl saw that you wanted to use the hash value as an array, so it created a new empty array and installed a reference to it in the hash automatically. And as usual, Perl made the array one element longer to hold the new city name.
Some of the highlights of perlref:
$aref2 = $aref1;
You get two references to the same array. If you modify "$aref1->[23]" and then look at "$aref2->[23]" you'll see the change.
To copy the array, use
$aref2 = [@{$aref1}];
This uses "[...]" notation to create a new anonymous array, and $aref2 is assigned a reference to the new array. The new array is initialized with the contents of the array referred to by $aref1.
Similarly, to copy an anonymous hash, you can use
$href2 = {%{$href1}};
ARRAY(0x80f5dec) or HASH(0x826afc0)
If you ever see a string that looks like this, you'll know you printed out a reference by mistake.
A side effect of this representation is that you can use "eq" to see if two references refer to the same thing. (But you should usually use "==" instead because it's much faster.)
You might prefer to go on to perllol instead of perlref; it discusses lists of lists and multidimensional arrays in detail. After that, you should move on to perldsc; it's a Data Structure Cookbook that shows recipes for using and printing out arrays of hashes, hashes of arrays, and other kinds of data.
This article originally appeared in The Perl Journal ( <http://www.tpj.com/> ) volume 3, #2. Reprinted with permission.
The original title was Understand References Today.
This documentation is free; you can redistribute it and/or modify it under the same terms as Perl itself.
Irrespective of its distribution, all code examples in these files are hereby placed into the public domain. You are permitted and encouraged to use this code in your own programs for fun or for profit as you see fit. A simple comment in the code giving credit would be courteous but is not required.
| 2019-10-21 | perl v5.30.3 |


R is a great programming language to do Data Analysis and Statistical Operations on data. It has a easy-to-follow readable syntax (somewhat similar to Python) and provides rich source of libraries/packages to perform anything from Data Manipulation to Data Visualization. YOu can install these packages from CRAN (Comprehensive R Archive Network) which is a place where all the R packages/distributions exist. In this tutorial, we will learn how to install R, RStudio and Shiny (an R package to create interactive web apps) in Ubuntu 14.04.
Installing R
Update the list of packages in the sources list
1 2 | sudo apt-get update sudo apt-get upgrade |
Install R using apt-get
1 | sudo apt-get install r-base |
Check whether installation was successful.
1 | R
|
It must display something like this -
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | R version 3.4.0 (2017-04-21) -- "You Stupid Darkness" Copyright (C) 2017 The R Foundation for Statistical Computing Platform: x86_64-pc-linux-gnu (64-bit) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. Natural language support but running in an English locale R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. |
Now, you are inside the R interactive shell and you can easily quit the shell using -
1 | q(save="no") |
After setting up R, you need to install packages (which are similar to libraries). The common format to install any R package from CRAN is -
1 | install.packages("the_name_of_your_package") |
Installing Shiny
Let’s install one of my favorite R packages, Shiny. Using this package, you can create an interactive webpages with zero HTML/CSS/Javascript knowledge.
1 | install.packages("shiny") |
Installing RStudio
R provides an elegant IDE to work with called RStudio. It is easy to work with the IDE rather than using the interactive shell. You can download RStudio here. An example of how RStudio looks is shown below. (source: http://rprogramming.net/wp-content/uploads/2012/10/RStudio-Screenshot.png)
In case if you found something useful to add to this article or you found a bug in the code or would like to improve some points mentioned, feel free to write it down in the comments. Hope you found something useful here.
Happy learning!


Structures
The following structures are available globally.
-
A
Logger
is the central type inSwiftLog
. Its central function is to emit log messages using one of the methods corresponding to a log level.The most basic usage of a
Logger
is
See morelogger.info("Hello World!")
Declaration
Swift
public struct Logger
-
A pseudo-
LogHandler
that can be used to send messages to multiple otherLogHandler
s.The first
See moreLogHandler
passed to the initialisation function ofMultiplexLogHandler
control thelogLevel
as well as themetadata
for thisLogHandler
. Any subsequentLogHandler
s used to initialise aMultiplexLogHandler
are merely to emit the log message to another place.Declaration
Swift
public struct MultiplexLogHandler : LogHandler
-
See moreStreamLogHandler
is a simple implementation ofLogHandler
for directingLogger
output to eitherstderr
orstdout
via the factory methods.Declaration
Swift
public struct StreamLogHandler : LogHandler


| Description | Data |
|---|---|
| {{item.key | titlecase }} | {{item.value | number}} |
| Last updated: {{ globalStats['updated'] | date:'long' }} |
Total number of cases reported Globally across {{globalStats.affectedCountries}} countries
{{globalStats.casesPerOneMillion}} cases per One Million
Total number of recoveries reported Globally
Total number of deaths reported Globally
{{globalStats.deathsPerOneMillion}} deaths per One Million
Total number of active cases reported Globally
{{globalStats.critical | number}} {{globalStats.critical/globalStats.active| percent:'1.2'}}Total number of critical cases out of active cases reported Globally
Total number of new active cases reported today
{{globalStats.todayDeaths | number}}Total number of new death cases reported today
{{globalStats.affectedCountries | number}}Total number of countries affected till date
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A nonstatic initializer block will be called any time a constructor is invoked (just prior to invoking the constructor). While this is a valid language construct, it is rarely used and is confusing. Example :public class MyClass {
// this block gets run before any call to a constructor {
System.out.println("I am about to construct myself");
}
}
This rule is deprecated, use {rule:squid:S1171} instead.


The Kpop, or Korean Pop, genre was well-known as early as the 1990s. It skyrocketed in popularity though when interest grew amongst the youth in Japan. This movement, properly titled as "The Korean Wave", evolved from being beloved by fans in Southeast Asian countries to being beloved worldwide. So much so, that it assisted in the improvement of South Korea's economy. The South Korean government encourages the creative growth amongst artists through subsidies and funding for start-ups.
The Kdrama, or Korean Drama, television genre is another subculture with it's roots originating from the 1990s. Actors and Actresses in starring roles gain idol status amongst their fans. Because of Kdramas aimed for a female audience, Kdramas have trasnformed the character traits of a typical male, usually with males being tall, handsome, and ready to be committed to one woman instantly. The typical drama is between 20-25 episodes in length.


F5 Identity and Access Management Solutions > Class 2: OAuth Federation with F5 Source | Edit on
Lab 2: API Protection¶
Purpose¶
This section will teach you how to configure a Big-IP (#1) as a Resource Server protecting an API with OAuth and another Big-IP (#2) as the Authorization Server providing the OAuth tokens.
Task 1: Setup Virtual Server for the API¶
Note
This task is performed on Big-IP #1 (RS)
Create the Virtual Server¶
Go to Local Traffic -> Virtual Servers and click on Create
Enter the following values (leave others default) then scroll down to Resources
- Name:
api.f5agility.com-vs
- Destination Address:
<IP_ADDRESS>
- Service Port:
443
- HTTP Profile:
http
- SSL Profile (Client):
f5agility-wildcard-self-clientssl
- Source Address Translation:
Auto Map
- Name:
In the Resources section, select following value (leave others default) then click Finished
Default Pool:
api-pool
Test Configuration¶
On the Jump Host, launch Postman from the desktop icon
The request should be prefilled with the settings below. If not change as needed or select TEST API Call from the API Collection and click Send
Method:
GET
Target:
https://api.f5agility.com/department
Authorization:
No Auth
Headers: (none should be set)
You should receive a 200 OK, 4 headers and the body should contain a list of departments.
Note
This request is working because we have not yet provided any protection for the API.*
Note
If you get “Could not get any response” then Postman’s settings may be set to verify SSL Certificates (default). Click File -> Settings and turn
SSL Certificate Verification
to Off.*
Task 2: Authorization Server¶
Note
This task is performed on Big-IP #2 (AS)
Configure the Database Instance¶
Go to Access -> Federation -> OAuth Authorization Server -> Database Instance and click Create
Enter oauth-api-db for the Name field and click Finished.
Configure the Scope¶
Go to Access -> Federation -> OAuth Authorization Server -> Scope and click Create
Enter the following values and and click Finished.
- Name:
oauth-scope-username
- Scope Name:
username
- Scope Value:
%{session.logon.last.username}
- Caption:
username
Note
This scope is requested by the Resource Server and the information here is provided back. You can hardcode a value or use a variable as we have here. So if the scope username is requested, we will supply back the username that was used to login at the Authorization Server (AS).*
- Name:
Configure the Client Application¶
Go to Access -> Federation -> OAuth Authorization Server -> Client Application and click Create
Enter the following values and click Finished.
- Name:
oauth-api-client
- Application Name:
HR API
- Caption:
HR API
- Authentication Type:
Secret
- Scope:
oauth-scope-username
- Grant Type:
Authorization Code
- Redirect URI(s):
https://www.getpostman.com/oauth2/callback
Remember to click Add
Note
The Redirect URI above is a special URI for the Postman client you’ll be using. This would normally be a specific URI to your client
- Name:
Configure the Resource Server¶
Go to Access -> Federation -> OAuth Authorization Server -> Resource Server and click Create
Enter the following values and click Finished.
- Name:
oauth-api-rs
- Application Type:
Secret
- Name:
Configure the OAuth Profile¶
Go to Access -> Federation -> OAuth Authorization Server -> OAuth Profile and click Create
Enter the following values and click Finished.
- Name:
oauth-api-profile
- Client Application:
oauth-api-client
- Resource Server:
oauth-api-rs
- Database Instance:
oauth-api-db
- Name:
Configure the APM Per Session Policy¶
Go to Access -> Profiles/Policies -> Access Profiles (Per Session Policies) and click Create
In the General Properties section enter the following values
- Name:
oauthas-ap
- Profile Type:
All
- Profile Scope:
Profile
- Name:
In the Configurations section select the following value from the OAuth Profile drop down menu.
- OAuth Profile:
oauth-api-profile
- OAuth Profile:
In the Language Settings section enter the following value and then click Finished.
- Languages:
English
- Languages:
Click Edit on the oauthas-ap policy, a new browser tab will open.
Click the + between Start and Deny
Select Logon Page from the Logon tab, and click Add Item
Accept the defaults on the Logon Page and click Save
Click the + between Logon Page and Deny
Select OAuth Authorization from the Authentication tab and click Add Item
Accept the defaults for the OAuth Authorization and click Save
Click Deny on the Successful branch after the OAuth Authorization object, select Allow, click Save
Click Apply Access Policy in the top left and then close the tab
Note
We are not validating the credentials entered on the Logon Page, so you can enter anything you want. In a production deployment you would most likely include some process for validating credentials such as an LDAP Auth or AD Auth object, or perhaps limiting access by IP or client certificate
Note
This policy might also set some variables that get used as scope values. Thus, you could determine what the scope values are by utilizing the policy here.*
Create the Authorization Virtual Server¶
Go to Local Traffic -> Virtual Servers and click Create
Enter the following values for the Authorization Server Virtual Server
- Name:
oauthas.f5agility.com-vs
- Destination Address:
<IP_ADDRESS>
- Service Port:
443
- HTTP Profile:
http
- SSL Profile (Client):
f5agility-wildcard-self-clientssl
- Source Address Translation:
Auto Map
- Name:
Scroll to the Access Policy section, select oauthas-ap from the Access Profile drop down menu and then click Finished at the bottom of the screen.
Task 3: Resource Server¶
Note
This task is performed on Big-IP #1 (RS)
Configure the OAuth Provider¶
Go to Access -> Federation -> OAuth Client/Resource Server -> Provider and click Create
Enter the following values for the Authorization Server Virtual Server and then click Finished
- Name:
oauthas.f5agility.com-provider
- Type:
F5
- Authentication URI:
https://oauthas.f5agility.com/f5-oauth2/v1/authorize
- Token URI:
https://oauthas.f5agility.com/f5-oauth2/v1/token
- Token Validation Scope:
https://oauthas.f5agility.com/f5-oauth2/v1/introspect
- Name:
Configure the OAuth Server¶
Go to Access -> Federation -> OAuth Client/Resource Server -> OAuth Server and click Create
Enter the following values for the Authorization Server Virtual Server and then click Finished
- Name:
api-resource-server
- Mode:
Resource Server
- Type:
F5
- OAuth Provider:
oauthas.f5agility.com-provider
- DNS Resolver:
oauth-dns
- Resource Server ID: (see step 5) <Get this from Big-IP 2 -> Access -> Federation -> OAuth Authorization Server -> Resource Server -> oauth-api-rs>
- Resource Server Secret: (see step 5) <Get this from Big-IP 2 -> Access -> Federation -> OAuth Authorization Server -> Resource Server -> oauth-api-rs>
- Resource Server’s Server SSL Profile Name: apm-allowuntrusted-serverssl
Note
We are using a custom serverssl profile to allow negotiation with an untrusted certificate. This is needed because our Authorization Server is using a self-signed certificate. In production for proper security you should leverage a trusted certificate (most likely publicly signed) and the apm-default-serverssl profile (or other as appropriate)*
- Name:
The values for step 4 above can be obtained by accessing Big-IP 2 and navigating to Access -> Federation -> OAuth Authorization Server -> Resource Server -> oauth-api-rs as shown.
To configure the APM Per Session Policy go to Access -> Profiles / Policies -> Access Profiles (Per Session Policies) and then click Create
Enter the following values and then click Finished
- Name:
api-ap
- Profile Type:
OAuth-Resource-Server
- Profile Scope:
Profile
- Languages:
English
Note
User Identification Method is set to OAuth Token and you cannot change it for this profile type.
- Name:
Click Edit on the new api-ap policy and a new window will open
Click Deny on the fallback branch after Start, select Allow and click Save
Click Apply Access Policy in the top left and then close the tab
To configure the APM Per Request Policy go to Access -> Profiles / Policies -> Per Request Policies and then click Create
Enter api-prp for the Name and click Finished
Click Edit on the api-prp policy and a new window will appear
Click Add New Subroutine
Leave the
Select Subroutine template
as Empty. Enter RS Scope Check for the Name and then click SaveClick the + next to the RS Scope Check
Click Edit Terminals on the RS Scope Check Subroutine
First, rename Out to Success, then click Add Terminal and name it Failure
Go to the Set Default tab and select Failure then click Save
Click Edit Terminals again (it will ignore the order settings if you do this in one step without saving in between)
Move Success to the top using the up arrow on the right side then click Save
Click the + between In and Success, a new window will appear
Select OAuth Scope from the Authentication tab and click Add Item
Enter the following values and then click Save
- Server:
/Common/api-resource-server
- Scopes Request: /Common/F5ScopesRequest
- Server:
Verify that the Successful branch terminates in Success and the Fallback branch terminates in Failure
In the main policy, click + between the Start and Allow
Select RS Scope Check from the Subroutines tab and click Add Item
Verify that the Success branch terminates in Allow and the Fallback branch terminates in Reject
Note
You do not need to “Apply Policy ” on Per Request Policies*
To add the APM Policies to the API Virtual Server, go to Local Traffic -> Virtual Servers and click on api.f5agility.com-vs
Scroll down to the Access Policy section. Change Access Profile from None to api-ap
Change Per-Request Policy from None to api-prp and then click Update
Task 3: Verify¶
On the Jump Host, launch Postman from the desktop icon
The request should be prefilled with the settings below (same as earlier). If not change as needed or select TEST API Call from the API Collection and click Send
- Method:
GET
- Target:
https://api.f5agility.com/department
- Authorization:
No Auth
- Headers:
(none should be set)
- Method:
You should receive a
401 Unauthorized
and 3 headers, includingWWW-Authenticate: Bearer
. The body will be empty.Note
Your API call failed because you are not providing an OAuth token. Both tabs shown
Click the Authorization tab and change the Type from No Auth to OAuth 2.0
If present, select any existing tokens on the left side and delete them on the right side. Click Get New Access Token
In the Get New Access Token window, if the values do not match then adjust as needed, and click Request Token
- Token Name: <Anything is fine here>
Note
If you’re doing this lab on your own machine and using self signed certificates you must add the certs to the trusted store on your computer. If you’ve just done this, you must close Postman and reopen. You also need to go to File -> Settings in Postman and turn SSL certificate validation to off.
- Auth URL:
https://oauthas.f5agility.com/f5-oauth2/v1/authorize
- Access Token URL:
https://oauthas.f5agility.com/f5-oauth2/v1/token
- Client ID: <Get this from Big-IP 2 -> Access -> Federation -> OAuth Authorization Server -> Client Application -> oauth-api-client>
- Client Secret: <Get this from Big-IP 2 -> Access -> Federation -> OAuth Authorization Server -> Client Application -> oauth-api-client>
- Scope:
- Grant Type:
Authorization Code
- Request access token locally:
checked
Logon with any credentials, such as user/password
Authorize the HR API by clicking Authorize
You now have received an OAuth Token. Click the name of your token under Existing Tokens (left) and your token will appear on the right
Change the Add token to drop down to Header and the click Use Token. You will note that the Header tab (in the section tabs just above) now has one header in the Header tab which contains your Authorization Header of type Bearer with a string value.
The Header tab data is shown in the screenshot
Click Send at the top of the Postman screen
You should receive a 200 OK, 5 headers and the body should contain a list of departments
Note
This time the request was successful because you presented a valid OAuth token to the resource server (the Big-IP), so it allowed the traffic to the API server on the backend.
Task 4: Testing Session and Token States¶
Note
Parts of this task are performed on both Big-IP devices. Check each step to make sure you are working on the correct device.
Invalidate the Session¶
Go to Big-IP 1 (OAuth C/RS) -> Access -> Overview -> Active Sessions. Select the existing sessions and click Kill Selected Sessions, then confirm by clicking Delete
Go back to Postman and click Send with your current OAuth token still inserted into the header. You should still receive a 200 OK, 5 headers and the body should contain a list of departments.
Note
You were still able to reach the API because you were able to establish a new session with your existing valid token*.
Invalidate both the Current Session and Token¶
Go Big-IP 2 (OAuth AS) -> Access -> Overview -> OAuth Reports -> Tokens. Change the DB Instance to oauth-api-db.
Select all tokens, click Checkbox left in title bar and the click Revoke in the top right
Go to Big-IP 1 (OAuth C/RS) -> Access -> Overview -> Active Sessions. Select the existing sessions and click Kill Selected Sessions, then confirm by clicking Delete
Go back to Postman and click Send with your current OAuth token still inserted into the header. You should receive a
401 Unauthorized
, 3 headers, no body, and theWWW-Authenticate
header will provide an error description indicating the token is not active.
Note
You can remove the header, delete the token, and start over getting a new token and it will work once again.*
Note
This time you were no longer able to reach the API because you no longer had a valid token to establish your new session with. Getting a new token will resolve the issue.


Input types allow you to specify more advanced query behavior. They serve as a way to alter the query, often in backend-specific ways, without altering your Python code; as well as enabling use of more advanced features.
Input types currently are only useful with the filter/exclude methods on SearchQuerySet. Expanding this support to other methods is on the roadmap.
Included with Haystack are the following input types:
Raw allows you to specify backend-specific query syntax. If Haystack doesn’t provide a way to access special query functionality, you can make use of this input type to pass it along.
Example:
# Fielded.
sqs = SearchQuerySet().filter(author=Raw('daniel OR jones'))
# Non-fielded.
# See ``AltParser`` for a better way to construct this.
sqs = SearchQuerySet().filter(content=Raw('{!dismax qf=author mm=1'}haystack'))
Clean takes standard user (untrusted) input and sanitizes it. It ensures that no unintended operators or special characters make it into the query.
This is roughly analogous to Django’s autoescape support.
Note
By default, if you hand a SearchQuerySet a bare string, it will get wrapped in this class.
Example:
# This becomes "daniel or jones".
sqs = SearchQuerySet().filter(content=Clean('daniel OR jones'))
# Things like ``:`` & ``/`` get escaped.
sqs = SearchQuerySet().filter(url=Clean('http://www.example.com'))
# Equivalent (automatically wrapped in ``Clean``).
sqs = SearchQuerySet().filter(url='http://www.example.com')
Exact allows for making sure a phrase is exactly matched, unlike the usual AND lookups, where words may be far apart.
Example:
sqs = SearchQuerySet().filter(author=Exact('n-gram support'))
# Equivalent.
sqs = SearchQuerySet().filter(author__exact='n-gram support')
Not allows negation of the query fragment it wraps. As Not is a subclass of Clean, it will also sanitize the query.
This is generally only used internally. Most people prefer to use the SearchQuerySet.exclude method.
Example:
sqs = SearchQuerySet().filter(author=Not('daniel'))
AutoQuery takes a more complex user query (that includes simple, standard query syntax bits) & forms a proper query out of them. It also handles sanitizing that query using Clean to ensure the query doesn’t break.
AutoQuery accommodates for handling regular words, NOT-ing words & extracting exact phrases.
Example:
# Against the main text field with an accidental ":" before "search".
# Generates a query like ``haystack (NOT whoosh) "fast search"``
sqs = SearchQuerySet().filter(content=AutoQuery('haystack -whoosh "fast :search"'))
# Equivalent.
sqs = SearchQuerySet().auto_query('haystack -whoosh "fast :search"')
# Fielded.
sqs = SearchQuerySet().filter(author=AutoQuery('daniel -day -lewis'))
AltParser let’s you specify that a portion of the query should use a separate parser in the search engine. This is search-engine-specific, so it may decrease the portability of your app.
Currently only supported under Solr.
Example:
# DisMax.
sqs = SearchQuerySet().filter(content=AltParser('dismax', 'haystack', qf='text', mm=1))
# Prior to the spatial support, you could do...
sqs = SearchQuerySet().filter(content=AltParser('dismax', 'haystack', qf='author', mm=1))
Building your own input type is relatively simple. All input types are simple classes that provide an __init__ & a prepare method.
The __init__ may accept any args/kwargs, though the typical use usually just involves a query string.
The prepare method lets you alter the query the user provided before it becomes of the main query. It is lazy, called as late as possible, right before the final query is built & shipped to the engine.
A full, if somewhat silly, example look like:
from haystack.inputs import Clean
class NoShoutCaps(Clean):
input_type_name = 'no_shout_caps'
# This is the default & doesn't need to be specified.
post_process = True
def __init__(self, query_string, **kwargs):
# Stash the original, if you need it.
self.original = query_string
super(NoShoutCaps, self).__init__(query_string, **kwargs)
def prepare(self, query_obj):
# We need a reference to the current ``SearchQuery`` object this
# will run against, in case we need backend-specific code.
query_string = super(NoShoutCaps, self).prepare(query_obj)
# Take that, capital letters!
return query_string.lower()