Nest Hub and Nest Hub Max can now react based on your proximity
Source: Android Central
What you need to know
- Google is rolling out ultrasonic sensing features to the Nest Hub and Nest Hub Max.
- The new feature will use high-frequency sounds to determine your proximity to the device and dynamically change what is on the display.
- Some examples include showing media controls as you are closer or making text for timers larger as you get further away.
Google's ultrasonic sensing feature has just begun rolling out to the Nest Hub and Nest Hub Max. With this new feature, it will allow the Nest-branded smart displays to dynamically change what appears on screen as you get closer or further away from the device.
For example, when setting a timer, the smart displays will now be able to show controls when you are close enough to reach them. As you back away, the controls will disappear and the remaining time will get larger, making it easier to see at a distance. It can also do handy things like expand weather cards, show controls during media playback, and more based on your proximity to the device.
Source: Android Central
For the Nest Hub Max, determining your distance from the display would be an easy task because of the built-in camera. However, the Nest Hub lacks a camera, which is why Google uses ultrasonic sensing that sends out high-frequency chirps and listens for feedback with the mics to detect when someone is nearby. It also means you can use this on the Nest Hub Max even if you disable the camera.
One downside to this is that since Google cannot determine who is nearby, it won't show personalized recommendations on the Nest Hub like it can when using face detection on the Nest Hub Max. One more thing worth noting is you won't have to worry about your pet's ears with the high-frequency noises. Google confirmed with Engadget "that even though the frequency used here is something dogs can hear, it's similar to typical noise in the home like that from a fridge."
Big screen smart display
Nest Hub Max
A Google smart display with a camera
Google's latest smart display is anything but ordinary. It stands out from the crowd with an ambient EQ display, facial recognition, and hands-free gestures to control media playback.
We may earn a commission for purchases using our links. Learn more.


Lesley J. Friedsam is
Board Certified in Marital and Family Law and is a partner in the firm of Fields and
Friedsam, PA, in Tampa, Florida. Prior to becoming an attorney, she was for ten years a
journalist, including seven years as a reporter-anchor for WTVT=TV in Tampa.
- "
- Deeds done long ago that were "not illegal but wrong" come to light. The trial becomes a metaphor for
justice beyond truth, as Kazuo is both a personal martyr and a potential savior of the towns past conduct.
-
- "
-
-
-
|
|
|
Snow Falling on Cedars
by Lesley J. Friedsam
Nine years
after Pearl Harbor, in a small fishing village in Washington State, a Japanese-American
(Rick Yume as Kazuo Miyamoto ) is on trial for killing his white neighbor. A reporter
(Ethan Hawke as Ishmael Chambers), who was and is still in love with the defendant's wife
( Youki Kudoh as Hatsue Miyamoto) watches, torn between his still-grieving heart and the
specter of his father's life lessons about integrity.
After the
prosecutor exhorts the jury to do its duty as Americans , the defense attorney (Max Von
Sydow as Nels Gudmundsson) uses the same words but with different meaning. Racial
prejudice and lost love are only two of the themes in this rich tapestry of post-war small
town America.
This most
exquisitely photographed film of the year begins with darkness and fog. We can't see
clearly and that is as it should be. The initial sensory deprivation appears to gradually
ease, only to segue into a montage of flashbacks and forwards that introduce us to the
histories and present day relationships of a father and son, a boy and a girl, a dead
fisherman and the man accused of murdering him. In less capable hands, these time and
place transitions would be distracting or worse. But the technique keenly reveals the
complexity and mystery of the connections between the characters against the backdrop of
the murder trial which forms the film's centerpiece.
Before the
war, before December 7, 1941 and the resulting the Japanese internment in Manzannar, a
young Ishmael falls sweetly in love with Hatsue. Their relationship ignores Hatsue's
family pressures to stay within her race and the tacit understanding of place and caste in
the small town where a Japanese girl is always chosen to be the Strawberry Princess as a
gesture of racial harmony and Japanese can't own land, but instead work stoop-labor in the
strawberry fields.
The doomed
romance ends when Ishmael goes off to war as his Japanese neighbors are sent into exile,
in a chilling scene evocative of Schindler's List. At war's end, Hatsue marries
Kazuo while Ishmael is adrift, unable to let her go.
One foggy
night, while Kazuo is out on his boat, another fisherman dies, tangled in his own fishing
net, a suspicious gash in his head. Kazuo is charged.
Ishmael
covers the trial and as it progresses, it is clear that Kazuo is not the only defendant;
The wartime behavior of the white citizens is also cross-examined. Deeds done long ago
that were "not illegal but wrong" come to light. The trial becomes a metaphor
for justice beyond truth, as Kazuo is both a personal martyr and a potential savior of the
towns past conduct.
Beyond the
easy question of whether Kazuo killed the man for whom he is on trial, another dimension
unfolds. Kazuo's guilt could free Hatsue to reclaim her first love, a man whose racial
brethren caused their wartime separation and reinforced her family's own racial
intolerance.
Meanwhile,
Ishmael struggles with an equally compelling conundrum. Does he follow his fathers
legacy and uncover the truth, or allow his still wounded heart and neighbors prejudices to
prevail?
Kazue may
well be guilty; he lied at a critical juncture in the investigation and also has a
racially charged motive for the crime: the dead man's parents used the Japanese detainment
to handily foreclose on land when payments couldnt be made.
Based on the
novel by David Guterwson, Snow Falling on Cedars is beautifully reminiscent of To
Kill A Mockingbird.
Director
Scott Hicks (Shine) and Academy Award winning Cinematographer Robert Richardson (JFK,
The Horse Whisperer) have created breathtaking beauty in the cold snowy scenes that
leave prior examples like Fargo and The Ice Storm wanting by comparison.
This hypnotic and atmospheric film won an another Oscar nomination for Richardson, a small
piece of justice in an otherwise bleak picture for this film which was poorly reviewed and
ill received by a public who prefer easy entertainment.
Posted May 10, 2000
|


NominalElementDictionary
public struct NominalElementDictionary<Key, Value> where Key : Hashable
extension NominalElementDictionary : Collection
extension NominalElementDictionary : Sequence
extension NominalElementDictionary : CustomReflectable
extension NominalElementDictionary
: CustomStringConvertible, CustomDebugStringConvertible
extension NominalElementDictionary : Hashable where Value : Hashable
extension NominalElementDictionary : Equatable where Value : Equatable
extension NominalElementDictionary
: Decodable where Key : Decodable, Value : Decodable
extension NominalElementDictionary : Encodable
where Key : Encodable, Value : Encodable
A Dictionary with a nominal Element
type, that can conform to things.
-
The underlying Swift dictionary.
Declaration
Swift
public typealias Base = [Key : Value]
-
A view of a dictionary’s keys.
Declaration
Swift
public typealias Keys = Base.Keys
-
A view of a dictionary’s values.
Declaration
Swift
public typealias Values = Base.Values
-
The position of a key-value pair in a dictionary.
Declaration
Swift
public typealias Index = Base.Index
-
The underlying Swift Dictionary
Declaration
Swift
public var base: Base
-
The element type of a dictionary, just like a tuple containing an individual key-value pair, but nominal.
Declaration
Swift
public typealias Element = KeyValuePair<Key, Value>
-
Creates an empty dictionary.
Declaration
Swift
public init()
-
Creates an empty dictionary with preallocated space for at least the specified number of elements.
Declaration
Swift
public init(minimumCapacity: Int)
-
Creates a new dictionary from the key-value pairs in the given sequence.
Declaration
-
Creates a new dictionary from the key-value pairs in the given sequence, using a combining closure to determine the value for any duplicate keys.
Declaration
-
Creates a new dictionary whose keys are the groupings returned by the given closure and whose values are arrays of the elements that returned each key.
Declaration
-
Returns a new dictionary containing the key-value pairs of the dictionary that satisfy the given predicate.
Declaration
Swift
@available(swift 4.0) public func filter( _ isIncluded: (Element) throws -> Bool ) rethrows -> NominalElementDictionary
-
Accesses the value associated with the given key, producing
nil
when the value of a key not in the dictionary is read, and erasing the key ifnil
is written.Declaration
Swift
public subscript(key: Key) -> Value? { get set }
-
Accesses the value for
key
, ordefaultValue
no such key exists in the dictionary, on write first insertingkey
with valuedefaultValue
if it does not exist in the dictionary.Declaration
Swift
public subscript( key: Key, default defaultValue: @autoclosure () -> Value ) -> Value
-
Returns a new dictionary containing the keys of this dictionary with the values transformed by the given closure.
Declaration
Swift
public func mapValues<T>( _ transform: (Value) throws -> T ) rethrows -> NominalElementDictionary<Key, T>
-
Returns a new dictionary containing only the key-value pairs that have non-
nil
values as the result of transformation by the given closure.Declaration
Swift
public func compactMapValues<T>( _ transform: (Value) throws -> T? ) rethrows -> [Key : T]
-
Updates the value stored in the dictionary for the given key and returns the old value, or adds a new key-value pair if the key does not exist and returns nil .
Declaration
Swift
public mutating func updateValue( _ value: Value, forKey key: Key ) -> Value?
-
Merges the key-value pairs in the given sequence into the dictionary, using a combining closure to determine the value for any duplicate keys.
Declaration
-
Merges the given dictionary into this dictionary, using a combining closure to determine the value for any duplicate keys.
Declaration
Swift
public mutating func merge( _ other: Self, uniquingKeysWith combine: (Value, Value) throws -> Value ) rethrows
-
Creates a dictionary by merging key-value pairs in a sequence into the dictionary, using a combining closure to determine the value for duplicate keys.
Declaration
-
Creates a dictionary by merging the given dictionary into this dictionary, using a combining closure to determine the value for duplicate keys.
Declaration
Swift
public func merging( _ other: Self, uniquingKeysWith combine: (Value, Value) throws -> Value ) rethrows -> Self
-
Removes and returns the key-value pair at the specified index.
-
Removes the given key and its associated value from the dictionary.
Declaration
Swift
public mutating func removeValue(forKey key: Key) -> Value?
-
Removes all key-value pairs from the dictionary.
Declaration
Swift
public mutating func removeAll( keepingCapacity keepCapacity: Bool = false )
-
A collection containing just the keys of the dictionary.
Declaration
Swift
@available(swift 4.0) public var keys: Keys { get }
-
A collection containing just the values of the dictionary.
Declaration
Swift
@available(swift 4.0) public var values: Values { get set }
-
An iterator over the members of a
See moreNominalElementDictionary<Key, Value>
.Declaration
Swift
public struct Iterator : IteratorProtocol
-
Removes and returns the first key-value pair of the dictionary if the dictionary isn’t empty.
Declaration
Swift
public mutating func popFirst() -> Element?
-
The total number of key-value pairs that the dictionary can contain without allocating new storage.
Declaration
Swift
public var capacity: Int { get }
-
Reserves enough space to store the specified number of key-value pairs.
Declaration
Swift
public mutating func reserveCapacity(_ minimumCapacity: Int)
-
The position of the first element in a nonempty dictionary.
Declaration
Swift
public var startIndex: Index { get }
-
The dictionary’s “past the end” position—that is, the position one greater than the last valid subscript argument.
Declaration
Swift
public var endIndex: Index { get }
-
Returns the position immediately after the given index.
-
Replaces the given index with its successor.
Declaration
Swift
public func formIndex(after i: inout Index)
-
Returns the index for the given key.
Declaration
Swift
public func index(forKey key: Key) -> Index?
-
Accesses the key-value pair at the specified position.
-
The number of key-value pairs in the dictionary.
Declaration
Swift
public var count: Int { get }
-
A Boolean value that indicates whether the dictionary is empty.
Declaration
Swift
public var isEmpty: Bool { get }
-
Returns an iterator over the dictionary’s key-value pairs.
Declaration
Swift
public func makeIterator() -> Iterator
-
A mirror that reflects the dictionary.
Declaration
Swift
public var customMirror: Mirror { get }
-
A string that represents the contents of the dictionary.
Declaration
Swift
public var description: String { get }
-
A string that represents the contents of the dictionary, suitable for debugging.
Declaration
Swift
public var debugDescription: String { get }
-
Creates a new dictionary by decoding from the given decoder.
Declaration
Swift
public init(from decoder: Decoder) throws
-
Encodes the contents of this dictionary into the given encoder.
Declaration
Swift
public func encode(to encoder: Encoder) throws


Web-based Application for Supporting Conference
Home
Conference Programme
Attraction and transportation information
Speakers list
Abstract list
Survey
Reports
About Page
Acknowledgements and sponsorship
Locations of venues inside the conference area
Search


Movie Theatre Showtimes |
||||||
|---|---|---|---|---|---|---|
| February 16, 2019 | ||||||
Poster |
Movie |
Rating |
Length |
ShowTimes |
Amenities |
|
| The Lego Movie 2 | PG | 106 Minutes | 1:10PM |
1:40PM |
Closed Caption, |
|
| 4:05PM |
4:30PM |
|||||
| 6:40PM |
7:10PM |
|||||
| 9:25PM |
9:50 PM - 3D |
|||||
| Isn't It Romantic | PG-13 | 89 Minutes | 12:00PM |
2:30PM |
Closed Caption, |
|
| 5:00PM |
7:30PM |
|||||
| 9:55PM |
The Lego Movie 2
PG | 1 hr. 06 min.
CC, DV, SS
Viewing Times


| Poly bd R31NF General Information
-
| Synonyms: |
PBD; Polybutadiene resin; (3Z)hex-3-ene |
| Molecular Weight: |
4500 (approx) |
| CAS Registry No.: |
9003-17-2 |
| Chemical Category: |
Polymeric plasticizers |
Usage and Performance Characteristics
-
| Manufacturer: |
SARTOMER Company |
| Outstanding Properties: |
Excellent electrical insulation properties, low temperature flexibility |
Physical Properties
-
| Specific Gravity: |
0.89 (25°C) |
| Dynamic Viscosity, cP: |
2750 (25°C) |
Hazard-Related Data
-
| OSHA Hazard Class: |
Not considered a hazardous substance |
Plasticizers Database (2nd Electronic Edition) Copyright © 2004 by ChemTec Publishing |


[gecode-users] How to estimate the range of a (linear) function
Max Ostrowski
ChaosAngel at gmx.de
Fri Jun 10 12:56:47 CEST 2011
Thanks a lot, it works wonderful now.
> The simplest option is to use the minimodel support for writing linear
> expressions, so in your case: instead of creating a variable y yourself,
> just set y to the variable that is returned by the expr function, that is,
> something like:
> IntVar y = expr(home, c+5*7-b);
> The expr function actually does infer tight bounds for the variables it
> returns (based on the domains of c and b in this example). If that does
> not
> fit your bill you might want to check how expr does it. Not that
> difficult,
> in fact.
>
> The problem is that one should always keep in mind that the basic
> abstraction in CP are relations (constraints). Anything that involves
> expressions requires additional effort. That is one reason why the basic
> layer in Gecode talks about constraints only and has an additional layer
> of
> abstraction (minimodel) to deal with expressions.
>
> Christian
>
> --
> Christian Schulte, KTH, web.it.kth.se/~cschulte/
>
>
> -----Original Message-----
> From: users-bounces at gecode.org [mailto:users-bounces at gecode.org] On Behalf
> Of Max Ostrowski
> Sent: Friday, June 10, 2011 10:42 AM
> To: users at gecode.org
> Subject: [gecode-users] How to estimate the range of a (linear) function
>
> Hello everybody,
>
> as i'm developing an SMT-like solver, i have a special syntax for the
> constraints of Gecode and i also have to handle things.
>
> b(1..3).
> $count[a(X) $== c+5*7-b : b(X)] $> 0.
>
>
> This shall represent an count constraint constraint.
> count(x,y,>,0) where x is a set of variables (a(1),a(2),a(3)) and y is a
> single variable y=c+5*7-b.
> The domains of the variables a,b,c are known (usually an IntSet).
> I created a variable for "c+5*7-b" using the domain
> (Limits::min,Limits::max).
> I found out that this is not the best way to do it, as Gecode does not
> seem
> to automatically shrink the domain of y :-)
>
>
> Is there some functionality in Gecode for automatically/manually estimate
> the range of a function. (So if i add a and b, can't i just "add" the
> domain
> of them using the IntVarRanges?).
> And the same for multiplication etc...
>
> Thanks in advance,
>
> Max
> --
> Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie
> mit
> bis zu 50,- Euro! https://freundschaftswerbung.gmx.de
>
> _______________________________________________
> Gecode users mailing list
> users at gecode.org
> https://www.gecode.org/mailman/listinfo/gecode-users
>
--
NEU: FreePhone - kostenlos mobil telefonieren!
Jetzt informieren: http://www.gmx.net/de/go/freephone
More information about the users
mailing list


Getting Started
Introduction
In reactivity programming paradigm, we mainly focus on two things, "reactive states" and "effects", to minimize unnecessary states(i.e flag) and complete complex system with a concise codebase. We do programming in a hoping-effects-to-happen-by-itself manner. After delared the states and effects, which is the relationships between states, we interact with the program just by reassigning the state and let effect to take place by itself.
Initialize a Instance
let recole1 = new recole()
Reactive Object
The method "createReactive" return a reactive object that invokes corresponding effects when properties being assigned.

0

Ref
Sometimes you just need a value instead of object. Use ref. And access it by "xx.value".
let name = recole1.ref("")
recole1.effect(()=>{
console.log(name.value)
})
name.value = "My name is John." // invoke the above effect.
Chaining Effects
Effects are implictly chainable by assigning and being assigned. Using effects to descript the relations between states, we can start to imagine how states and effects alone can compose a system.

Computed
A short cut to declare ref with effect at once.

Reactivity in Declaration
It would be convenient to directly declare reactivity in the creation of the reactive object.
To reference other object's property, refer it by an object with "ref" and "key".
let product1 = recole1.createReactive({ price: 10, quantity: 1 })
let product2 = recole1.createReactive({ price: {ref: product1, key: "price"}, quantity: 1 }) // declare object that is reactive with other reactive object
console.log(product2.price) // 10
product1.price = 11 // change the price of product1
console.log(product2.price) // 10
product1.price = product1.price * 2
console.log(product2.price) // 22
If the refered object is of the type of "ref", use "value" as the key.
Watch
To invoke functions whenever there are changes happen to reactive object, use "watch" method.
let product = recole1.createReactive({price:10, quantity:16})
recole1.watch(product, ()=>{
console.log("Product quantity changed!!")
})
product.quantity -= 1
product.quantity += 1
Sometimes, you would want to invoke functions before the value being assigned. Pass in a function in the third parameter.
let product = recole1.createReactive({price:10, quantity:16})
recole1.watch(
product,
()=>{
console.log(`Product quantity changed!! Quantity: ${product.quantity}`)
},
()=>{
console.log(`Product quantity not yet changed!! Quantity: ${product.quantity}`)
}
)
product.quantity -= 1
And sometimes, you would like to share data between the two functions passed in. Use set_cache_obj and cache_obj methods on a reactive object.
let product = recole1.createReactive({price:10, quantity:16})
recole1.watch(
product,
()=>{
if(product.cache_obj().cached_value > product.quantity){
console.log("Product increased")
}else{
console.log("Product decreased")
}
},
()=>{
product.set_cache_obj({cached_value: product.quantity})
}
)
product.quantity -= 1
product.quantity += 1
We can also nest reactive object and watch them separately.
let obj1 = {inner: recole1.ref(1)}
let obj2 = {inner: recole1.ref(2)}
let objWrapper = recole1.ref(obj1)
let tempStr = ""
let tempStr2 = ""
recole1.watch(objWrapper, ()=>{
tempStr = "tc11: watch1" // this should not be invoked
})
recole1.watch(objWrapper.value.inner, ()=>{
tempStr2 = "tc11: watch2"
})
objWrapper.value.inner.value = 10 // this should invoke the watch above
console.log(tempStr) // ""
console.log(tempStr2) // "tc11: watch2"
objWrapper.value = obj2
console.log(tempStr) // ""tc11: watch1""
Cancel
It would be nice to be able to cancel the watch effect. In most cases, you may not have to cancel unless there are concerns with the performance.
let aa = recole1.createReactive({ value:"ccc" })
recole1.watch(aa, ()=>{
console.log(aa.value)
})
aa.value = 'bbb' // console.log: "bbb"
recole1.cancel(aa)
aa.value = 'aaa' // not console.log: "aaa"


Class: ActiveRecord::TypeCaster::Connection
Do not use. This class is for internal use only.
| Relationships & Source Files | |
| Inherits: | Object |
| Defined in: | activerecord/lib/active_record/type_caster/connection.rb |
Class Method Summary
- .new(klass, table_name) ⇒ Connection constructor
Instance Attribute Summary
- #connection readonly
- #table_name readonly private
Instance Method Summary
Constructor Details
.new(klass, table_name) ⇒ Connection
# File 'activerecord/lib/active_record/type_caster/connection.rb', line 6
def initialize(klass, table_name) @klass = klass @table_name = table_name end
Instance Attribute Details
#connection (readonly)
[ GitHub ]# File 'activerecord/lib/active_record/type_caster/connection.rb', line 27
delegate :connection, to: :@klass, private: true
#table_name (readonly, private)
[ GitHub ]# File 'activerecord/lib/active_record/type_caster/connection.rb', line 30
attr_reader :table_name
Instance Method Details
#type_cast_for_database(attr_name, value)
[ GitHub ]# File 'activerecord/lib/active_record/type_caster/connection.rb', line 11
def type_cast_for_database(attr_name, value) type = type_for_attribute(attr_name) type.serialize(value) end
#type_for_attribute(attr_name)
[ GitHub ]# File 'activerecord/lib/active_record/type_caster/connection.rb', line 16
def type_for_attribute(attr_name) schema_cache = connection.schema_cache if schema_cache.data_source_exists?(table_name) column = schema_cache.columns_hash(table_name)[attr_name.to_s] type = connection.lookup_cast_type_from_column(column) if column end type || Type.default_value end


nips nips2003 nips2003-158 nips2003-158-reference knowledge-graph by maker-knowledge-mining
Source: pdf
Author: J. A. Bagnell, Sham M. Kakade, Jeff G. Schneider, Andrew Y. Ng
Abstract: We consider the policy search approach to reinforcement learning. We show that if a “baseline distribution” is given (indicating roughly how often we expect a good policy to visit each state), then we can derive a policy search algorithm that terminates in a ﬁnite number of steps, and for which we can provide non-trivial performance guarantees. We also demonstrate this algorithm on several grid-world POMDPs, a planar biped walking robot, and a double-pole balancing problem. 1
[1] E. Amaldi and V. Kann. On the approximability of minimizing nonzero variables or unsatisﬁed relations in linear systems. Theoretical Comp. Sci., 1998.
[2] C. Atkeson and J. Morimoto. Non-parametric representation of a policies and value functions: A trajectory based approach. In NIPS 15, 2003.
[3] F. Gomez. http://www.cs.utexas.edu/users/nn/pages/software/software.html.
[4] Sham Kakade. On the Sample Complexity of Reinforcement Learning. PhD thesis, University College London, 2003.
[5] Sham Kakade and John Langford. Approximately optimal approximate reinforcement learning. In Proc. 19th International Conference on Machine Learning, 2002.
[6] Michael Kearns, Yishay Mansour, and Andrew Y. Ng. Approximate planning in large POMDPs via reusable trajectories. (extended version of paper in NIPS 12), 1999.
[7] M. Littman. Memoryless policies: theoretical limitations and practical results. In Proc. 3rd Conference on Simulation of Adaptive Behavior, 1994.
[8] Andrew Y. Ng and Michael I. Jordan. P EGASUS: A policy search method for large MDPs and POMDPs. In Proc. 16th Conf. Uncertainty in Artiﬁcial Intelligence, 2000.
[9] Ronald J. Williams. Simple statistical gradient-following algorithms for connectionist reinforcement learning. Machine Learning, 8:229–256, 1992. 3 In our setting, we use weighted logistic regression and minimize − (θ) = P (i) − i w log p(y (i) |s(i) , θ) where p(y = 1|s, θ) = 1/(1 + exp(−θ T s)). It is straightforward to show that this is a (convex) upper-bound on the objective function T (θ).


With so many indie game bundles, how can you keep track of them all?! Submit new bundle • View data • RSS feed


The purpose of this project was to create an application/coding game that prepares
users for a job interview. The user battles TAs and eventually gets to the "Boss" Instructor.
ISS Tracker
ISS Tracker is a dynamic, responsive codebase created to actively track the location of
the International
Space Station at all times.
Password Generator
The user is able to choose between 8 to 128 mixed characters to create a secure
password.
Work Day Scheduler
The user is able to input data for each hour in a working day and save the activity as
the day progresses.
Burger App
The user is able to enter a burger, devour it, and delete it from the list.


This section contains all the learning resources you will ever need such as videos, books...
This section contains all the information to guide your passage from highschool to university...
This section contains all co-curricular activities you can imagine clubs, societies, music, art, sports...


{% assign first_two_services = include.events | slice:0, 2 %} {% assign remaining_services = include.events | slice:2, 100 %} {{ event.name }} {{ event.content | markdownify }} Saturday April 6th | 10:30-12:15 Christ Church Mayfair W1J 7AN


Requested Connection RateWhat is the rate of established SSL connections? What is the rate of connection requested SSL connections? Use the mouse to hover over a specific data point to see what the y values and exact timestamp were in relation to peaks.The Riverbed system reports on performance for periods up to one month. Due to performance and disk space considerations, the display granularity decreases with time passed since the data was sampled. The data is collected at a 5-minute granularity for the entire month.
Select a report time interval of 5 minutes (5m), 1 hour (1h), 1 day (1d), 1 week (1w), All, or type a custom date. All includes statistics for the last 30 days.You can view the newest data and see data points as they are added to the chart dynamically. To display the newest data, click Show newest data.


Located at the southern end of Sweden's east coast and is adjacent to the bridge connecting the mainland to the island of Oland.
Position 56°39′41″N,16°21′46″E.


Comp 305 Lab 1stats.h | /home/lido1/petriedavi/305Comp/project2/nachos/html/
Fri Apr 4 12:09:11 NZDT 2008 |
// stats.h // Data structures for gathering statistics about Nachos performance. // // DO NOT CHANGE -- these stats are maintained by the machine emulation // // // Copyright (c) 1992-1993 The Regents of the University of California. // All rights reserved. See copyright.h for copyright notice and limitation // of liability and disclaimer of warranty provisions. #ifndef STATS_H #define STATS_H #include "copyright.h" // The following class defines the statistics that are to be kept // about Nachos behavior -- how much time (ticks) elapsed, how // many user instructions executed, etc. // // The fields in this class are public to make it easier to update. class Statistics { public: int totalTicks; // Total time running Nachos int idleTicks; // Time spent idle (no threads to run) int systemTicks; // Time spent executing system code int userTicks; // Time spent executing user code // (this is also equal to # of // user instructions executed) int numDiskReads; // number of disk read requests int numDiskWrites; // number of disk write requests int numConsoleCharsRead; // number of characters read from the keyboard int numConsoleCharsWritten; // number of characters written to the display int numPageFaults; // number of virtual memory page faults int numPacketsSent; // number of packets sent over the network int numPacketsRecvd; // number of packets received over the network Statistics(); // initialize everything to zero void Print(); // print collected statistics }; // Constants used to reflect the relative time an operation would // take in a real system. A "tick" is a just a unit of time -- if you // like, a microsecond. // // Since Nachos kernel code is directly executed, and the time spent // in the kernel measured by the number of calls to enable interrupts, // these time constants are none too exact. #define UserTick 1 // advance for each user-level instruction #define SystemTick 10 // advance each time interrupts are enabled #define RotationTime 500 // time disk takes to rotate one sector #define SeekTime 500 // time disk takes to seek past one track #define ConsoleTime 100 // time to read or write one character #define NetworkTime 100 // time to send or receive one packet #define TimerTicks 100 // (average) time between timer interrupts #endif // STATS_H


I participate in the Cultural Music Society, amulticultural organization that plays music for university and community events. We played for Arun Gandhi, at his Nonviolence in a Violent World public lecture.
I worked many jobs thoughout my college career, including McDonalds(2011-14), Home Depot(2014-15), Fuji Sushi Bar(2015-17), Round House Start-Up Incubator(2016), and Brewbakers(2011-13).
I was then moved to working with start-ups to help develop ideas to paper to product. This began to become a passion of mine and my team and I transitioned Mad Men Software into a start-up support group.
I interned at Roundhouse Start-up Incubator in 2016, I worked on a mobile app called InsuraScan, built in Cordova, and my initial responsibilities included system testing and updating user stories for Jira.
You can use this page to view my school work and projects, check out my small business I started, Mad Men Software, or download my resume. Click continue to learn more about me.


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Please provide any additional notes on this submission along with your URIGen API key if required


AmfSerializer manages the job of translating PHP objects into the actionscript equivalent via Amf. The main method of the serializer is the serialize method which takes and AmfObject as it's argument and builds the resulting Amf Message.
TODO spit into 2 classes, one for Amf0 , one for Amf3 or maybe more.
Located in /Amfphp/Core/Amf/Serializer.php (line 22)
| Class | Description |
|---|---|
| AmfSerializerWrapper | This class exports some internal (public) methods. This way, those methods can be tested separately. |
used for Amf0 references
used for traits references. key: class name. value: array(reference id, array(property names))
used for Amf3 references
amf3 references to strings
Return the serialisation of the given integer (Amf3).
note: There does not seem to be a way to distinguish between signed and unsigned integers. This method just sends the lowest 29 bit as-is, and the receiver is responsible to interpret the result as signed or unsigned based on some context.
note: The limit imposed by Amf3 is 29 bit. So in case the given integer is longer than 29 bit, only the lowest 29 bits will be serialised. No error will be logged!
looks if $obj already has a reference. If it does, write it, and return true. If not, add it to the references array.
Depending on whether or not the spl_object_hash function can be used ( available (PHP >= 5.2), and can only be used on an object) things are handled a bit differently:
This also means that 2 completely separate instances of a class but with the same values will be written fully twice if we can't use the hash system
initialize reference arrays and counters. Call before writing a body or a header, as the indices are local to each message body or header
serializes the Packet passed in the constructor TODO clean up the mess with the temp buffers. A.S.
handles writing an anoynous object (stdClass) can also be a reference Also creates a bogus traits entry, as even an anonymous object has traits. In this way a reference to a class trait will have the right id.
Write a boolean (Amf3).
Write an (un-)signed integer (Amf3).
Write NULL (Amf3).
Write a string (Amf3). Strings are stored in a cache and in case the same string is written again, a reference to the string is sent instead of the string itself.
note: Sending strings larger than 268435455 (2^28-1 byte) will (silently) fail!
note: The string marker is NOT sent here and has to be sent before, if needed.
writes a typed object. Type is determined by having an "explicit type" field. If this field is not set, call writeAmf3AnonymousObject write all properties as sealed members.
Write undefined (Amf3).
handles writing an anoynous object (stdClass) can also be a reference
writeArrayOrObject first determines if the PHP array contains all numeric indexes or a mix of keys. Then it either writes the array code (0x0A) or the object code (0x03) and then the associated data.
writeBoolean writes the boolean code (0x01) and the data to the output stream
writeByte writes a singe byte to the output stream 0-255 range
writeData checks to see if the type was declared and then either auto negotiates the type or relies on the user defined type to serialize the data into Amf
writeData writes the date code (0x0B) and the date value (milliseconds from 1 January 1970) to the output stream, along with an empty unsupported timezone
writeDouble takes a float as the input and writes it to the output stream.
Then if the system is big-endian, it reverses the bytes order because all doubles passed via remoting are passed little-endian.
writeInt takes an int and writes it as 2 bytes to the output stream 0-65535 range
writeLong takes an int, float or double and converts it to a 4 byte binary string and adds it to the output buffer
writeLongUTF will write a string longer than 65535 characters.
It works exactly as writeUTF does except uses a long for the length flag.
writeNull writes the null code (0x05) to the output stream
writeNumber writes the number code (0x00) and the numeric data to the output stream All numbers passed through remoting are floats.
writeObjectEnd writes the object end code (0x009) to the output stream
writeObjectFromArray handles writing a php array with string or mixed keys. It does not write the object code as that is handled by the writeArrayOrObject and this method is shared with the CustomClass writer which doesn't use the object code.
Write a plain numeric array without anything fancy
writeString writes the string code (0x02) and the UTF8 encoded string to the output stream.
Note: strings are truncated to 64k max length. Use XML as type to send longer strings
writeTypedObject takes an instance of a class and writes the variables defined in it to the output stream.
To accomplish this we just blanket grab all of the object vars with get_object_vars, minus the Amfphp_Core_Amf_Constants::FIELD_EXPLICIT_TYPE field, whiuch is used as class name
writeUndefined writes the Undefined code (0x06) to the output stream
writeUTF takes and input string, writes the length as an int and then appends the string to the output buffer
writeXML writes the xml code (0x0F) and the XML string to the output stream
Note: strips whitespace
Documentation generated on Tue, 29 May 2012 23:42:05 +0200 by phpDocumentor 1.4.3


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title: Lean Prover Zulip Chat Archive
permalink: 113488general/15882Ilovelibrarysearch.html
---
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Start your project with Beyondthecodes Inc. We’d love to work with you. When you’re ready to talk, We are ready to develop. Dedicated to integrating technology and software solutions. We understand the importance of first impressions.
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Guitargasm serves as the leader in the online video guitar lesson market. If you are just beginning to play the guitar, or are interested in improving your skills and knowledge as a guitarist, you have come to the right place.
Guitargasm is an all-purpose guitar instructional e-learning website developed by Bilawal Soomro, a BIT Degree student in Graffins College Nairobi. The website is basically aims to help aspirting players to learn basic techniques and theory by providing facts, lessons and tutorials in a very simple and organized manner.
Start off your journey in guitar playing with our beginner lessons and build a solid foundation for your playing. Since bad habits can criple the progress of any guitarist, learning from a knowledgable instructor is a must!
Guitargasm will teach you the raw basics of playing guitar, including topics such as tuning, posture, finger technique, and many other topics. Most of the instructions found in these lesson sets are very similar, just taught by different instructors. Feel free to browse these lessons and impress your girl friend by playing her favorite song!
If becoming the gold standard of quality in the guitar business was a remarkable achievement for PRS, equally impressive has been its maintaining that standard as the company has grown into a major industry presence. While PRS’s continuing success in this regard demands a constant re-evaluation of materials, tools, and procedures, the bottom-line goal hasn’t changed since the days when Paul Smith hand-crafted his first instruments in an upstairs loft: Build extraordinary guitars, guitars with magic.
National Sales and Marketing Manager Larry Urie: “With every increase in factory size or production output, we build in even tighter quality control to make sure our standards remain extremely high. If anything, the quality control at PRS is tighter than it’s ever been.”
Some companies see a public relations benefit to invoking the romance of historic guitars from the ’50s and ’60s, but Paul Smith knows that for the people who actually designed and built those classic instruments (people like his mentor, Ted McCarty), PR and romance were the furthest things from their minds. Their goal was to manufacture great instruments, period. Build a guitar whose tone inspires you to be a better player, whose durability will get you through a thousand gigs, whose elegance makes it an artwork in its own right. Build a guitar that players can’t put down, and the romance and the PR and all the rest will follow.
Paul Smith: “We don’t do something just because that’s the traditional way. If the best possible guitar results from using a robot for one procedure and a lot of hand-sanding or hand-inlaying for another, then that’s how we do it. Our tradition is a byproduct of our quality, so excellence is always the goal. We never lose sight of that.”
Larry Urie adds: “The automation and the individual craftsmanship go together at PRS. Using automation in one area where it produces superior results allows us to do even more handwork and detail work in those areas where there’s no substitute for the individual craftsman’s eye and skill. People who tour the factory come away amazed at how much handwork they see, and even with the machinery, it’s all dominated by the human element. It’s all about the commitment and the judgment of a highly skilled individual.”
In other words, even in the age of CNC machinery, the essence of the PRS magic still comes down to a pair of hands.
Aside from his family, friends, and business, one of the most important things in Paul Smith’s life is his music — his songwriting, guitar playing, recording, and performing. I mention it because Paul’s enthusiasm for killer tone and for exhilarating music inspires a kind of top-down passion for craftsmanship that as far as I can tell reaches to every workbench in the factory. He estimates that 80% of PRS workers are musicians; many of them gig regularly in bands. PRS President Jack Higginbotham: “These builders have a special kind of pride, an individual ownership of the instruments they’re making. Every one of them treats each guitar as their own, because it is their own. It’s a very personal thing for these builders.”
This passion for quality affects not only the work habits of individuals but also the structure of the whole company. Paul Smith: “We’re not organized like other companies. Every PRS craftsperson is a self-contained quality control ‘department.’ They have a lot of authority over their work, and if a guitar falls short in any way, they don’t pass it on to the next stage, and they make that decision themselves. They hand guitars back and forth all the time, and they inspect everything over and over. It’s like an old European guild or a shop. There’s a constant ‘is this good enough?’ conversation out there on the factory floor. So the quality control begins at the workbench. It’s not something we overlay or tack on. It’s an integral, organic part of the process, beginning with design and materials selection and going through every single step in construction and testing.”
I’ve had many conversations with Paul Smith over the past 15 years or so, most of them beginning with his asking “Guess what?” and continuing with an enthusiastic explanation of a new discovery about tone. The latest improvement to PRS guitars could be something as minor as the tonal effects of substituting a small part made of a different material. Yes, Paul Smith can hear things most of us can’t hear, or can barely hear, but what’s more remarkable is that the mechanical and engineering savvy of Paul and his brilliant collaborators enables them to convert those observations into improvements in PRS guitars — improvements you can hear and feel.
My son Joe is a black belt in karate. I always assumed the black belt was the end of the road, but he explained to me that it’s just the beginning of a new road. I sense a similar philosophy from the people who build PRS guitars. While players and magazine writers have been waxing eloquent for years about these workers’ mastery of their craft, the builders see themselves as travelers only midway on a journey of discovery. “We’re not there yet,” Paul explains. “It’s a continuing thing. We’re never finished. It’s the quest, the challeng
e — that’s what brings us to the factory every day.”
Back when he started crafting instruments one at a time, Paul Smith was steeped in the traditions of the great electric guitars of the ’50s and ’60s. Today he finds himself absorbed with the traditions of another revered company — his own. While he fondly recalls the early days of PRS, nostalgia is not a top priority. The best way he can honor the traditions of his own past is to look forward. At PRS, yesterday always takes a back seat to tomorrow. Paul Smith: “I am lucky to have an extremely talented team — not just craftspeople and artists but marketers, salespeople, programmers, administrators, and others — and everyone who works here feels the same way: We want players to know that no matter how great that old PRS guitar is, we’re pushing for the new one to be even better.”


Woman Avoids Jail Despite Starving 25 Horses In One Of Worst Cases RSPCA Has Ever Seen
by Cameron FrewThe RSPCA called it one of the worst cases they’ve ever seen: 25 horses starved and neglected, with one of them dead. Somehow, the owner avoided jail.
Amanda Thorne – from Bodmin, Cornwall – was handed a suspended sentence and banned from keeping equines for life after her treatment of the animals.
Judges said the 41-year-old mother-of-two showed no remorse for what happened, despite a long-standing RSPCA investigator calling it the ‘cruellest’ neglect they had ever witnessed.
The RSPCA were only alerted to the ‘dreadful’ conditions after concerned neighbours in rural Cornwall raised the alarm, Plymouth Magistrates’ Court heard.
District Judge Diana Baker said:
The horses were starving to death, they were not being treated for their ailments. Their hooves were not being trimmed. They were in a pitiful state.
You have shown no remorse for what happened and you blamed others. Concerned members of the public brought this matter to to the attention of the RSPCA. One of the experts said that this could have been a whole lot worse if they had not brought the matter to their attention.
The horses were missing basic amenities, such as clean housing, decent food, fresh drinking water, a dry lying area, adequate exercise or parasitic control.
Of the 25, eight horses had overgrown hooves and four were malnourished. One was in need of serious veterinary care for a foot abscess, rain scald, lymphangitis, cellulitis and wounds. After one horse tragically died, the rest were taken to safety by the NSPCA.
At first, Judge Baker was going to send Thorne to jail – however, she then decided to suspend her six-month term for 12 months.
Judge Baker added:
I have given you a chance, I have given your children a chance and your parents a chance. If you breach any part of the order your feet will not touch the ground.
The sentence dictates Thorne must complete 15 days of her probation’s Rehabilitation Activity Requirement, and pay £15,000 towards the RSPCA’s costs. She also has to wear an electronic tag as part of a four-month seven-day-a-week curfew.
Thorne, who brought up two children on the farm while going through a divorce from her husband, while also dealing with her own health difficulties, initially denied the charges. However, she was found guilty by the judge after a trial in her absence last month.
RSPCA inspector Jo Pearson, the lead officer on the case, said:
It is completely the right sentence for this lady. I have been working for the RSPCA as an inspector for 20 years and it is one of the cruellest cases I have ever seen. Without members of the public coming to us with the information, she would never have been brought before the courts today.
After graduating from Glasgow Caledonian University with an NCTJ and BCTJ-accredited Multimedia Journalism degree, Cameron ventured into the world of print journalism at The National, while also working as a freelance film journalist on the side, becoming an accredited Rotten Tomatoes critic in the process. He’s now left his Scottish homelands and took up residence at UNILAD as a journalist.


Welcome
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If you don't already have Quokka 'PRO' edition and want to purchase, we wanted to let you know that Quokka 'PRO' edition is currently discounted by % for people in .
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If you are new to Quokka.js, you may launch our interactive demonstration Quokka file and see various features in action.
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What's New
The What’s New section details recent major features and changes. For older news or more details about minor updates and changes, please refer to our website. We have some exciting new features under development, stay tuned!
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Code Stories PRO
Quokka's new Code Story feature (for Quokka Pro) provides a unique and highly efficient way of inspecting what your code is doing in a single continuous view. The viewer is fully integrated with Quokka's Time Machine, which means you can simply select a variable or expression to see its runtime value. Seeing the executed code displayed in a single continuous view really cuts down on context switching that you may experience in a traditional debugger experience.
Once Quokka has started on a file, the Code Story can be launched using the View Code Story command. The View Code Story command will start also Quokka's Time Machine if it is not already started. The Code Story can also be launched using the View Code Story code lens in the Quokka output header code lens after starting the Time Machine. Quokka's Time Machine features are also fully available when a Code Story is displayed.
Time Machine
We are thrilled to announce the latest big Quokka feature - Time Machine for JavaScript and TypeScript. The time machine provides a turn-key ergonomic time travel debugging experience, including auto play mode, that unlike a general purpose debugger was built for quick experimentation and instant feedback loop.
The time machine can be started from any line of code with a single click, there are no special steps to perform to start using it, even breakpoints are optional. You can step forward and backward through your code to understand the conditions that led to a specific behaviour. To inspect the runtime value of a variable, you may simply select it.
In addition to Quokka Community time machine features, Quokka Pro allows you to edit your code and continue your debug session with the modified changes.
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Previously Quokka would highlight all logged values in Output pane with the same color. For large objects or arrays this could make it slightly hard to read. Quokka now recognizes built-in types such as strings / numbers / objects / arrays and highlights them accordingly. In addition, we minimized the number of hidden characters in the output to make select & copy process easier.
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Recent Files
Quokka now provides a list of all recently launched Quokka files (both physical and scratch files) which may be viewed by using the View Recent Files command. This view displays the contents of the files (search with Ctrl/Cmd + F), the date the file was last run, and provides a number of actions. Read more in our docs.
Auto Log PRO
Quokka now allows users to change the behavior of Quokka to use Show Value to automatically show the runtime value for every line of code. This behavior can be changed after starting Quokka using the Toggle Auto Log command. By default, this behavior is disabled but the default may be changed using the autoLog configuration setting.
Sticky Values PRO
Live Values are now sticky which means that they survive your file changes while being updated as you type. Values may also be hidden in by pressing Escape to clear a value or Escape Escape to clear all values in a file.
Improved Show/Copy/Debug Value Selection
We significantly improved Show Value detection when using Show Value and Copy Value. This update enables fuzzy token selection instead of previously having to select an exact token to output. In addition to being able to show values for additional syntax constructs, the feature also now has better support for code transpiled with TypeScript and Babel.
Report Quokka Config Errors
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Log Limit Setting
Previously Quokka would log an infinite number of values for repeated code (e.g. within a loop). For a large number of iteration, this could lead to slow Quokka execution and out of memory exceptions. Quokka now limits the default number of values output for repeated code to 100; this can be changed with a Quokka setting.
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Adds status bar text Quokka to the left hand side of the VS Code status bar to quickly access this screen.
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Global Quokka Config
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Area¶
// Single View Specification
{
"data": ... ,
"mark": "area",
"encoding": ... ,
...
}
area
represent multiple data element as a single area shape. Area marks are often used to show change over time, using either a single area or stacked areas.
Documentation Overview¶
- TOC
Area Mark Properties¶
// Single View Specification
{
...
"mark": {
"type": "area",
...
},
"encoding": ... ,
...
}
An area mark definition can contain any standard mark properties and the following line interpolation as well as line and point overlay properties:
liqid template: like ".. altair-object-table::"
{% include table.html props="orient,interpolate,tension,line,point" source="MarkDef" %}
Examples¶
Area Chart¶
Using area
mark with one temporal or ordinal field (typically on x
) and one quantitative field (typically on y
) produces an area chart. For example, the following area chart shows a number of unemployment people in the US over time.
Area Chart with Overlaying Lines and Point Markers¶
By setting the line
and point
properties of the mark definition to true
or an object defining a property of the overlaying point marks, we can overlay line and point markers on top of area.
Stacked Area Chart¶
Adding a color field to area chart creates stacked area chart by default. For example, here we split the area chart by industry.
Normalized Stacked Area Chart¶
You can also create a normalized stacked area chart by setting "stack"
to "normalize"
in the encoding channel. Here we can easily see the percentage of unemployment across industries.
Streamgraph¶
We can also shift the stacked area chart’s baseline to center and produces a streamgraph by setting "stack"
to "center"
in the encoding channel.
Ranged Area¶
Specifying x2
or y2
for the quantitative axis of area marks produce ranged areas.
For example, we can use ranged area with the ci0
and ci0
aggregation operators to highlight 95% confidence interval of a line chart that shows mean values over time.
Area Config¶
// Top-level View Specification
{
...
"config": {
"area": ...,
...
}
}
The area
property of the top-level config
object sets the default properties for all area marks. If mark property encoding channels are specified for marks, these config values will be overridden.
The area config can contain any area mark properties (except type
, style
, clip
, and orient
).


I learnt that mindfulness and meditation can improve your attention and memory. I have always had a very poor memory, so learning that I can improve this is nice. Most of the concepts in the first chapter were already familiar to me, as having GAD I have spent some time prior to the course exploring my mind and the ways in which behavior can be changed. However was good reading the example studies in the chapter and seeing that these ideas can be backed up by science and aren't just 'hippie psychobabble'.
That two minutes wasn't enough. I have attempted meditation in the past, and find it takes me at least 5 minutes to get myself to stop thinking about all the things I have to do and become really present in the moment. I know the more I practise this the faster I'll be able to get into the right mindset, at which point two minutes might be all I need, but as a beginner I did not feel much better after just two minutes.


Namespace Picturepark.SDK.V1.Contract
Classes
|
An AggregationFilter is provided with each aggregated value.    Restricted to the languages supported by elastic search. https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis-lang-analyzer.html |
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A document stored in the elastic search metadata index, with fields corresponding to the the schemantics of its underlying list schema. |
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A request structure for creating a list item document. |
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The detail view item for the list item. |
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ListItemFieldsFilterUpdateRequest ListItemFieldsFilterUpdateRequest class |
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Encapsulates the result of a list item search. |
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A request structure for updating a list item. |
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MessagePerformerTaskCanceledException
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MetadataValuesChangeCommandBase The base class for metadata value change commands. |
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MetadataValuesChangeRequestBase
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MetadataValuesFieldRemoveCommand Removes a field and its value from the schema values. |
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MetadataValuesSchemaItemAddCommand Adds a list item id reference to a multi tagbox. |
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MetadataValuesSchemaItemRemoveCommand Removes a list item id reference from a multi tagbox. |
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MetadataValuesSchemaRemoveCommand Removes schema values. |
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MetadataValuesSchemaUpdateCommand Updates schema values. |
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MetadataValuesSchemaUpsertCommand Adds or updates schema values. |
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The NestedAggregator is a special single bucket aggregation that enables aggregating nested documents. |
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The NestedFilter is a joining filter and returns documents whose nested objects / documents (see nested mapping) match the specified filter. |
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An analyzer using the NGram tokenizer. https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis-ngram-tokenizer.html |
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The NotFilter is a compound filter and returns documents that do not match the specified filter. |
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The NumericRangeAggregator is a multi-bucket range aggregation.


class WaitSystem : IteratingSystem
This system process Entities with a WaitComponent. After the waitTime, that's specified in the WaitComponent, is elapsed, the WaitComponent is removed. The WaitComponent is used to delay the processing of other components through other systems.
<init> |
This system process Entities with a WaitComponent. After the waitTime, that's specified in the WaitComponent, is elapsed, the WaitComponent is removed. The WaitComponent is used to delay the processing of other components through other systems. WaitSystem() |
waitMapper |
val waitMapper: ComponentMapper<WaitComponent!>! |
processEntity |
fun processEntity(entity: Entity?, deltaTime: Float): Unit |


This tests for setting the selection at a position inside a document in designMode. You should see a caret at the start of the body.


Trace
Compass
Status
← 2129m
↓ 421m
Current location
XXX
Current coverage
XXX
Current time
XXX
Last known coverage location
XXX
Last known coverage time
XXX


[t]Mail a friend[/t]
{$a.title|escape}
[t]In order to send the article to your friend by e-mail, please fill all required form fields:[/t]
[t]Your name[/t]
[t]Please enter your name![/t]
[t]Your e-mail[/t]
[t]Please enter your valid e-mail address![/t]
[t]Your friend's e-mail[/t]
[t]Please enter your friend's valid e-mail address![/t]
[t]Note[/t]
{if $redata}{$redata.note|escape}{/if}
{* antispam_method *}
[t]Please enter the security code exactly as shown[/t]:
[t]Code[/t]:
[t]Please enter the right security code![/t]


|
ovs all
|
Directories | |
| directory | db |
| directory | unixctl |
Files | |
| file | __init__.py |
| file | daemon.py |
| file | dirs.py |
| file | fatal_signal.py |
| file | json.py |
| file | jsonrpc.py |
| file | ovsuuid.py |
| file | poller.py |
| file | process.py |
| file | reconnect.py |
| file | socket_util.py |
| file | stream.py |
| file | timeval.py |
| file | util.py |
| file | version.py |
| file | vlog.py |


>Variation of DOW 2012 basic example with store-defined grouper by Month
>CONFIG** additionalListConfigs: {grouped: true}
>Demonstrates column sorting within each group (as opposed to across all data)


[1]
Realibility! Technology! Simplicity! New Battery! SD storage! EOS family!; looks complicated to new users.
[2]
Easy operation, but still excellent picture quality; Flash light shoul be physically adjustable.


Masonry 1
Masonry 2
Masonry 3
Masonry 4
Masonry 5
Masonry 6
Masonry 7
Masonry 8
Masonry 9
Masonry 10


The debug_lib option causes the path of each loaded library to be printed to standard out. This is performed by the undocumented pyglet.lib module, which on Linux and Mac OS X must sometimes follow complex procedures to find the correct library. On Windows not all libraries are loaded via this module, so they will not be printed (however, loading Windows DLLs is sufficiently simple that there is little need for this information).
X11 errors are caught by pyglet and suppressed, as there are plenty of X servers in the wild that generate errors that can be safely ignored. The debug_x11 option causes these errors to be dumped to standard out, along with a traceback of the Python stack (this may or may not correspond to the error, depending on whether or not it was reported asynchronously).
The debug_win32 option causes all library calls into user32.dll, kernel32.dll and gdi32.dll to be intercepted. Before each library call SetLastError(0) is called, and afterwards GetLastError() is called. Any errors discovered are written to a file named debug_win32.log. Note that an error is only valid if the function called returned an error code, but the interception function does not check this.


Copyright (c) 2000 Chris Huntoon
This game is played on a 8x8 board with the following setup:
|
| An example Red as a winning move which takes 16 jumps! The sequence is: f4:f6-h4::f4-f2:d2-f4:d4-f2-f4-h6:f6-h4-f2-f4-h6:h8 (!) After these moves Green only has b1 and d1 becoming stalemated and so, loosing the game. |


ChatPlus Backup and Restore
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Flipped Classroom
Find slides, lectures, end of chapter questions, and MATLAB code.
Laboratory Experiments
Find student lab guides, MATLAB templates for Labs, and YouTube videos
Faculty
Find latex source for slides, and end of chapter questions, and answer keys, lab manual for TAs


Join Room
API
https://localhost:8080/api/v1/rooms
| URL | HTTP Method | Operation |
| /api/v1/rooms | POST | create a room |
| /api/v1/rooms | GET | list all rooms |
| /api/v1/rooms/:id | GET | retrieve a room |
| /api/v1/rooms/:id | PUT | update a room |
| /api/v1/rooms | DELETE | delete a room |


Transparency data
Ofqual board meeting held on 24 September 2014: minutes, agenda and reports.
PDF , 255KB , 4 pages
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email<EMAIL_ADDRESS>. Please tell us what format you need. It will help us if you say what assistive technology you use.
Ref: Ofqual Board Paper 44(iv)/14 PDF , 466KB , 15 pages
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email<EMAIL_ADDRESS>. Please tell us what format you need. It will help us if you say what assistive technology you use.
Ref: Ofqual Board Paper 46/14 PDF , 135KB , 9 pages
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email<EMAIL_ADDRESS>. Please tell us what format you need. It will help us if you say what assistive technology you use.
Ref: Ofqual Board Paper 48/14 PDF , 515KB , 7 pages
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email<EMAIL_ADDRESS>. Please tell us what format you need. It will help us if you say what assistive technology you use.
Ref: Ofqual Board Paper 50/14 PDF , 840KB , 41 pages
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email<EMAIL_ADDRESS>. Please tell us what format you need. It will help us if you say what assistive technology you use.
Ref: Ofqual Board Paper 53/14 PDF , 93.6KB , 2 pages
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email<EMAIL_ADDRESS>. Please tell us what format you need. It will help us if you say what assistive technology you use.
The attached minutes document contains minutes from previous meetings held on 23 July 2014 and 19 August 2014 and any matters arising from them.


define_star.Rd
Helpers for IPM construction
define_pop_state(proto_ipm, ..., pop_vectors = list()) define_state_vars(proto_ipm, ...) define_env_state(proto_ipm, ..., data_list) define_hier_effs(proto_ipm, ...)
| proto_ipm | The name of object you wish to append the new kernel to. |
|---|---|
| ... | Named expressions. See details for more information on their usage in
each |
| pop_vectors | If the population vectors are already pre-defined (i.e. are
not defined by a function passed to |
| data_list | A list of named values that correspond to constants in the formula. You do not need to specify vectors corresponding to the domains here. |
All define_*
functions return a proto_ipm.
These are helper functions to define certain types of IPM classes. It is recommended
to use them within the IPM construction pipeline somewhere between add_kernels
and make_ipm
. The order in which they are called does not matter provided
all values on the left hand side of the ...
appear in the right hand side
of another expression used elsewhere. Expressions where the left hand side does
not appear anywhere else will be ignored during construction, and so will not
be present in the returned ipm
object.
Each define_*
function takes dots in the same way: named expressions
are captured and evaluated later in the appropriate contexts with their respective
kernels. Suffix expansion is supported so that hierarchical models with
year/plot/what-have-you effects do not need to be rewritten 10s or 100s of times.


ZPT-Sharp NuGet Bundles
The recommended way to install ZPT-Sharp into your own software project is via the NuGet package manager.
This page lists a number of NuGet bundle packages which are provided in order to get ZPT-Sharp installed quickly and without fuss.
ZPT-Sharp is a customisable, plugin-based piece of software though. If you would prefer to customise the components installed then you are free to tailor your installation and hand-pick NuGet packages instead.
The packages
Any of the following packages will install and set up ZPT-Sharp. Each provides everything you would expect of 'the standard distribution'.
ZPT-Sharp for ASP.NET MVC5
This bundle is for using ZPT-Sharp as an ASP.NET MVC5
ViewEngine
.
After installing the NuGet package you will need to make a one-time change to your view-engine registrations. Then, you are ready to write views using ZPT.
ZPT-Sharp ZptBuilder application
This bundle installs ZptBuilder.exe, the command-line ZPT page-rendering application.
This stand-alone application renders documents based on a model provided using command-line parameters.
ZPT-Sharp API bundle
This bundle installs just the ZPT-Sharp API, for use in your own applications. The API documentation contains more information about how to make use of ZPT to create a page-rendering application with no dependencies on web components.


{% extends "header.html" %} {% block body %}
This is the original image that has been scanned
Noise from the image is removed by applying image processing using openCV
The different region of interests are identified
Intelligent Character Recognition where the characters and words are detected
The handwritten image is now converted to digitalised text
The words detected in the previous step are now corrected using a medical dictionary


- \defgroup uipopt Configuration options for uIP
- @{
*
- uIP is configured using the per-project configuration file
- uipopt.h. This file contains all compile-time options for uIP and
- should be tweaked to match each specific project. The uIP
- distribution contains a documented example "uipopt.h" that can be
- copied and modified for each project.
*
- \note Most of the configuration options in the uipopt.h should not
be changed, but rather the per-project uip-conf.h file.
\file
- Configuration options for uIP.
- \author Adam Dunkels<EMAIL_ADDRESS>*
- This file is used for tweaking various configuration options for
- uIP. You should make a copy of this file into one of your project's
- directories instead of editing this example "uipopt.h" file that
comes with the uIP distribution.
\name Static configuration options
- @{
*
- These configuration options can be used for setting the IP address
- settings statically, but only if UIP_FIXEDADDR is set to 1. The
- configuration options for a specific node includes IP address,
- netmask and default router as well as the Ethernet address. The
- netmask, default router and Ethernet address are appliciable only
- if uIP should be run over Ethernet.
*
All of these should be changed to suit your project.
Determines if uIP should use a fixed IP address or not.
*
- If uIP should use a fixed IP address, the settings are set in the
- uipopt.h file. If not, the macros uip_sethostaddr(),
- uipsetdraddr() and uipsetnetmask() should be used instead.
*
\hideinitializer
Ping IP address asignment.
*
- uIP uses a "ping" packets for setting its own IP address if this
- option is set. If so, uIP will start with an empty IP address and
- the destination IP address of the first incoming "ping" (ICMP echo)
- packet will be used for setting the hosts IP address.
*
- \note This works only if UIP_FIXEDADDR is 0.
*
\hideinitializer
Specifies if the uIP ARP module should be compiled with a fixed
- Ethernet MAC address or not.
*
- If this configuration option is 0, the macro uip_setethaddr() can
- be used to specify the Ethernet address at run-time.
*
\hideinitializer
@}
\name IP configuration options
@{
*
The IP TTL (time to live) of IP packets sent by uIP.
*
This should normally not be changed.
Turn on support for IP packet reassembly.
*
- uIP supports reassembly of fragmented IP packets. This features
- requires an additonal amount of RAM to hold the reassembly buffer
- and the reassembly code size is approximately 700 bytes. The
- reassembly buffer is of the same size as the uip_buf buffer
- (configured by UIP_BUFSIZE).
*
- \note IP packet reassembly is not heavily tested.
*
\hideinitializer
The maximum time an IP fragment should wait in the reassembly
buffer before it is dropped.
*
@}
\name UDP configuration options
@{
Toggles wether UDP support should be compiled in or not.
*
\hideinitializer
Toggles if UDP checksums should be used or not.
*
- \note Support for UDP checksums is currently not included in uIP,
- so this option has no function.
*
\hideinitializer
The maximum amount of concurrent UDP connections.
*
\hideinitializer
The name of the function that should be called when UDP datagrams arrive.
*
\hideinitializer
@}
\name TCP configuration options
@{
Determines if support for opening connections from uIP should be
- compiled in.
*
- If the applications that are running on top of uIP for this project
- do not need to open outgoing TCP connections, this configration
- option can be turned off to reduce the code size of uIP.
*
\hideinitializer
The maximum number of simultaneously open TCP connections.
*
- Since the TCP connections are statically allocated, turning this
- configuration knob down results in less RAM used. Each TCP
- connection requires approximatly 30 bytes of memory.
*
\hideinitializer
The maximum number of simultaneously listening TCP ports.
*
- Each listening TCP port requires 2 bytes of memory.
*
\hideinitializer
Determines if support for TCP urgent data notification should be
- compiled in.
*
- Urgent data (out-of-band data) is a rarely used TCP feature that
- very seldom would be required.
*
\hideinitializer
The initial retransmission timeout counted in timer pulses.
*
This should not be changed.
The maximum number of times a segment should be retransmitted
- before the connection should be aborted.
*
This should not be changed.
The maximum number of times a SYN segment should be retransmitted
- before a connection request should be deemed to have been
- unsuccessful.
*
This should not need to be changed.
The TCP maximum segment size.
*
- This is should not be to set to more than
UIPBUFSIZE - UIPLLHLEN - UIPTCPIP_HLEN.
The size of the advertised receiver's window.
*
- Should be set low (i.e., to the size of the uip_buf buffer) is the
- application is slow to process incoming data, or high (32768 bytes)
- if the application processes data quickly.
*
\hideinitializer
How long a connection should stay in the TIME_WAIT state.
*
- This configiration option has no real implication, and it should be
left untouched.
@}
\name ARP configuration options
@{
The size of the ARP table.
*
- This option should be set to a larger value if this uIP node will
- have many connections from the local network.
*
\hideinitializer
The maxium age of ARP table entries measured in 10ths of seconds.
*
- An UIPARPMAXAGE of 120 corresponds to 20 minutes (BSD
default).
@}
\name General configuration options
@{
The size of the uIP packet buffer.
*
- The uIP packet buffer should not be smaller than 60 bytes, and does
- not need to be larger than 1500 bytes. Lower size results in lower
- TCP throughput, larger size results in higher TCP throughput.
*
\hideinitializer
Determines if statistics support should be compiled in.
*
- The statistics is useful for debugging and to show the user.
*
\hideinitializer
Determines if logging of certain events should be compiled in.
*
- This is useful mostly for debugging. The function uip_log()
- must be implemented to suit the architecture of the project, if
- logging is turned on.
*
\hideinitializer
Broadcast support.
*
- This flag configures IP broadcast support. This is useful only
- together with UDP.
*
\hideinitializer
*
Print out a uIP log message.
*
- This function must be implemented by the module that uses uIP, and
is called by uIP whenever a log message is generated.
The link level header length.
*
- This is the offset into the uip_buf where the IP header can be
- found. For Ethernet, this should be set to 14. For SLIP, this
- should be set to 0.
*
\hideinitializer
@}
\name CPU architecture configuration
- @{
*
- The CPU architecture configuration is where the endianess of the
- CPU on which uIP is to be run is specified. Most CPUs today are
- little endian, and the most notable exception are the Motorolas
- which are big endian. The BYTE_ORDER macro should be changed to
reflect the CPU architecture on which uIP is to be run.
The byte order of the CPU architecture on which uIP is to be run.
*
- This option can be either BIG_ENDIAN (Motorola byte order) or
- LITTLE_ENDIAN (Intel byte order).
*
\hideinitializer
@}
\name Appication specific configurations
- @{
*
- An uIP application is implemented using a single application
- function that is called by uIP whenever a TCP/IP event occurs. The
- name of this function must be registered with uIP at compile time
- using the UIP_APPCALL definition.
*
- uIP applications can store the application state within the
- uip_conn structure by specifying the type of the application
- structure by typedef:ing the type uiptcpappstatet and uipudpappstatet.
*
- The file containing the definitions must be included in the
- uipopt.h file.
*
- The following example illustrates how this can look.
\code
void httpd_appcall(void);
define UIPAPPCALL httpdappcall


Ocean [ak29], ocean, in Crystal Sea
Last updated Turn #147
Ocean [ak29], ocean, in Crystal Sea
------------------------------------------------------------------------
8: Pleasure Sloop [v5n], ship, 30 hulls, 1 rowing port, 90 sails, arrived
8: from Ocean [ak28], owner:
8: Dorothy [v1b], Pen, with one worker, 94 sailors
8: Apollo [b5e], Imperial Empire, with 11 workers, six sailors, 63 lt.
8: xbowmen, five warmounts, accompanied by:
8: Lutra [a4w], Imperial Empire, with 11 paladins, 21 pikemen
8: Lungor [y4r], Imperial Empire
8: Merbit [e2m], Imperial Empire
8: Pink Blazer [n8e], Imperial Empire
8: Kiki Ghelfond [p2w], Imperial Empire
8: Hera [g3f], Imperial Empire, with three soldiers, 28 pikemen
8: Thor [r4g], Imperial Empire, with 32 pikemen
8: Eos [a2t], Imperial Empire, with ten workers, 48 lt. xbowmen
8: Khaki Blazer [w4j], Imperial Empire, with four soldiers,
8: four pikemen, 25 lt. foot
8: Banian [e7n], Imperial Empire, duke, the High Priest of the
8: Church of Eres [151], with one soldier, ten angels
8: Black Blazer [s8u], Mandor Confederacy, prisoner
8: Baltor [v5s], Mandor Confederacy, prisoner
8: Andrea Sorvetao [f4f], Mandor Confederacy, prisoner
9: Pleasure Sloop [v5n], ship, 30 hulls, 1 rowing port, 90 sails,
9: departed for Ocean [ak30].
Routes leaving Ocean:
North, to Ocean [aj29], 6 days
East, to Ocean [ak30], 6 days
South, forest, to Great Forest [al29], Mandoria, 2 days
West, to Ocean [ak28], 6 days


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Note: To complete these procedures, you must be assigned a role having the necessary permissions. To determine your role, follow the directions in Participant roles. For a basic understanding of roles and permissions, see Permissions and roles: Overview.
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Note: You can also delete the forum or topic entirely, which will remove any associated messages; see Revising or deleting a forum or topic.


Methods
-
queryMethod () → {function}
-
Returns:
- Type
- function
-
transaction () → {Promise}
-
Starts a transaction.
Give the the model classes you want to use in the transaction as arguments to this function. The model classes are bound to a newly created transaction and passed to the callback. All queries created using the bound model classes or any result acquired through them take part in the same transaction.
You must return a promise from the callback. If this promise is fulfilled the transaction is committed. If the promise is rejected the transaction is rolled back.
Examples:
moron.transaction(Person, Animal, function (Person, Animal) { return Person .query() .insert({firstName: 'Jennifer', lastName: 'Lawrence'}) .then(function () { return Animal.query().insert({name: 'Scrappy'}); }); }).then(function (scrappy) { console.log('Jennifer and Scrappy were successfully inserted'); }).catch(function (err) { console.log('Something went wrong. Neither Jennifer nor Scrappy were inserted'); });
Related model classes are automatically bound to the same transaction. So if you use
Animal
implicitly throughPerson
's relations you don't have to bind Animal explicitly. The following example clarifies this:moron.transaction(Person, function (Person) { return Person .query() .insert({firstName: 'Jennifer', lastName: 'Lawrence'}) .then(function (jennifer) { // This insert takes part in the transaction even though we didn't explicitly // bind the `Animal` model class. return jennifer.$relatedQuery('pets').insert({name: 'Scrappy'}); }); }).then(function (scrappy) { console.log('Jennifer and Scrappy were successfully inserted'); }).catch(function (err) { console.log('Something went wrong. Neither Jennifer nor Scrappy were inserted'); });
Inside the callback
this
is the knex transaction object. So if you need to create knex queries you can do this:moron.transaction(Person, function (Person) { var knex = this; return Person .query() .insert({firstName: 'Jennifer', lastName: 'Lawrence'}) .then(function (jennifer) { return knex.insert({name: 'Scrappy'}}.into('Animal'); }); }).then(function () { console.log('Jennifer and Scrappy were successfully inserted'); }).catch(function (err) { console.log('Something went wrong. Neither Jennifer nor Scrappy were inserted'); });
Returns:
- Type
- Promise
Type Definitions
-
MoronModelOptions
-
Type:
- Object
Properties:
Name Type Description patch
Boolean If true the json is treated as a patch and the
required
field of the json schema is ignored in the validation. This allows us to create models with a subset of required properties for patch operations. -
MoronRelationJoin
-
Type:
- Object
Properties:
Name Type Description from
String to
String through
Object Properties
Name Type Description from
String to
String -
MoronRelationMapping
-
Type:
- Object
Properties:
Name Type Argument Description modelClass
MoronModel | String relation
MoronRelation join
MoronRelationJoin <optional>
query
function | Object <optional>


Geode performs different consistency checks depending on the type of region you have configured.
Partitioned Region Consistency
For a partitioned region, Geode maintains consistency by routing all updates on a given key to the Geode member that holds the primary copy of that key. That member holds a lock on the key while distributing updates to other members that host a copy of the key. Because all updates to a partitioned region are serialized on the primary Geode member, all members apply the updates in the same order and consistency is maintained at all times. See Understanding Partitioning.
Replicated Region Consistency
For a replicated region, any member that hosts the region can update a key and distribute that update to other members without locking the key. It is possible that two members can update the same key at the same time (a concurrent update). It is also possible that, due to network latency, an update in one member is distributed to other members at a later time, after those members have already applied more recent updates to the key (an out-of-order update). By default, Geode members perform conflict checking before applying region updates in order to detect and consistently resolve concurrent and out-of-order updates. Conflict checking ensures that region data eventually becomes consistent on all members that host the region. The conflict checking behavior for replicated regions is summarized as follows:
- If two members update the same key at the same time, conflict checking ensures that all members eventually apply the same value, which is the value of one of the two concurrent updates.
- If a member receives an out-of-order update (an update that is received after one or more recent updates were applied), conflict checking ensures that the out-of-order update is discarded and not applied to the cache.
How Consistency Checking Works for Replicated Regions and How Destroy and Clear Operations Are Resolved provide more details about how Geode performs conflict checking when applying an update.
Non-Replicated Regions and Client Cache Consistency
When a member receives an update for an entry in a non-replicated region and applies an update, it performs conflict checking in the same way as for a replicated region. However, if the member initiates an operation on an entry that is not present in the region, it first passes that operation to a member that hosts a replicate. The member that hosts the replica generates and provides the version information necessary for subsequent conflict checking. See How Consistency Checking Works for Replicated Regions.
Client caches also perform consistency checking in the same way when they receive an update for a region entry. However, all region operations that originate in the client cache are first passed onto an available Geode server, which generates the version information necessary for subsequent conflict checking.
Configuring Consistency Checking
Geode enables consistency checking by default. You cannot disable consistency checking for persistent regions. For all other regions, you can explicitly enable or disable consistency checking by setting the concurrency-checks-enabled
region attribute in cache.xml
to “true” or “false.”
All Geode members that host a region must use the same concurrency-checks-enabled
setting for that region.
A client cache can disable consistency checking for a region even if server caches enable consistency checking for the same region. This configuration ensures that the client sees all events for the region, but it does not prevent the client cache region from becoming out-of-sync with the server cache.
See <region-attributes>.
Note: Regions that do not enable consistency checking remain subject to race conditions. Concurrent updates may result in one or more members having different values for the same key. Network latency can result in older updates being applied to a key after more recent updates have occurred.
Overhead for Consistency Checks
Consistency checking requires additional overhead for storing and distributing version and timestamp information, as well as for maintaining destroyed entries for a period of time to meet consistency requirements.
To provide consistency checking, each region entry uses an additional 16 bytes. When an entry is deleted, a tombstone entry of approximately 13 bytes is created and maintained until the tombstone expires or is garbage-collected in the member. (When an entry is destroyed, the member temporarily retains the entry with its current version stamp to detect possible conflicts with operations that have occurred. The retained entry is referred to as a tombstone.) See How Destroy and Clear Operations Are Resolved.
If you cannot support the additional overhead in your deployment, you can disable consistency checks by setting concurrency-checks-enabled
to “false” for each region. See Consistency for Region Updates.
How Consistency Checking Works for Replicated Regions
Each region stores version and timestamp information for use in conflict detection. Geode members use the recorded information to detect and resolve conflicts consistently before applying a distributed update.
By default, each entry in a region stores the ID of the Geode member that last updated the entry, as well as a version stamp for the entry that is incremented each time an update occurs. The version information is stored in each local entry, and the version stamp is distributed to other Geode members when the local entry is updated.
A Geode member or client that receives an update message first compares the update version stamp with the version stamp recorded in its local cache. If the update version stamp is larger, it represents a newer version of the entry, so the receiving member applies the update locally and updates the version information. A smaller update version stamp indicates an out-of-order update, which is discarded.
An identical version stamp indicates that multiple Geode members updated the same entry at the same time. To resolve a concurrent update, a Geode member always applies (or keeps) the region entry that has the highest membership ID; the region entry having the lower membership ID is discarded.
Note:
When a Geode member discards an update message (either for an out-of-order update or when resolving a concurrent update), it does not pass the discarded event to an event listener for the region. You can track the number of discarded updates for each member using the conflatedEvents
statistic. See Geode Statistics List. Some members may discard an update while other members apply the update, depending on the order in which each member receives the update. For this reason, the conflatedEvents
statistic differs for each Geode member. The example below describes this behavior in more detail.
The following example shows how a concurrent update is handled in a distributed system of three Geode members. Assume that Members A, B, and C have membership IDs of 1, 2, and 3, respectively. Each member currently stores an entry, X, in their caches at version C2 (the entry was last updated by member C):
Step 1: An application updates entry X on Geode member A at the same time another application updates entry X on member C. Each member increments the version stamp for the entry and records the version stamp with their member ID in their local caches. In this case the entry was originally at version C2, so each member updates the version to 3 (A3 and C3, respectively) in their local caches.
Step 2: Member A distributes its update message to members B and C.
Member B compares the update version stamp (3) to its recorded version stamp (2) and applies the update to its local cache as version A3. In this member, the update is applied for the time being, and passed on to configured event listeners.
Member C compares the update version stamp (3) to its recorded version stamp (3) and identifies a concurrent update. To resolve the conflict, member C next compares the membership ID of the update to the membership ID stored in its local cache. Because the distributed system ID the update (A3) is lower than the ID stored in the cache (C3), member C discards the update (and increments the conflatedEvents
statistic).
Step 3: Member C distributes the update message to members A and B.
Members A and B compare the update version stamp (3) to their recorded version stamps (3) and identify the concurrent update. To resolve the conflict, both members compare the membership ID of the update with the membership ID stored in their local caches. Because the distributed system ID of A in the cache value is less than the ID of C in the update, both members record the update C3 in their local caches, overwriting the previous value.
At this point, all members that host the region have achieved a consistent state for the concurrent updates on members A and C.
How Destroy and Clear Operations Are Resolved
When consistency checking is enabled for a region, a Geode member does not immediately remove an entry from the region when an application destroys the entry. Instead, the member retains the entry with its current version stamp for a period of time in order to detect possible conflicts with operations that have occurred. The retained entry is referred to as a tombstone. Geode retains tombstones for partitioned regions and non-replicated regions as well as for replicated regions, in order to provide consistency.
A tombstone in a client cache or a non-replicated region expires after 8 minutes, at which point the tombstone is immediately removed from the cache.
A tombstone for a replicated or partitioned region expires after 10 minutes.  Garbage collection is automatically triggered after 100,000 tombstones of any type have timed out in the local Geode member. You can optionally set the gemfire.tombstone-gc-threshold
property to a value smaller than 100000 to perform garbage collection more frequently.
Note: To avoid out-of-memory errors, a Geode member also initiates garbage collection for tombstones when the amount of free memory drops below 30 percent of total memory.
You can monitor the total number of tombstones in a cache using the tombstoneCount
statistic in CachePerfStats
. The tombstoneGCCount
statistic records the total number of tombstone garbage collection cycles that a member has performed. replicatedTombstonesSize
and nonReplicatedTombstonesSize
show the approximate number of bytes that are currently consumed by tombstones in replicated or partitioned regions, and in non-replicated regions, respectively. See Geode Statistics List.
About Region.clear() Operations
Region entry version stamps and tombstones ensure consistency only when individual entries are destroyed. A Region.clear()
operation, however, operates on all entries in a region at once. To provide consistency for Region.clear()
operations, Geode obtains a distributed read/write lock for the region, which blocks all concurrent updates to the region. Any updates that were initiated before the clear operation are allowed to complete before the region is cleared.
Transactions with Consistent Regions
A transaction that modifies a region having consistency checking enabled generates all necessary version information for region updates when the transaction commits.
If a transaction modifies a normal, preloaded or empty region, the transaction is first delegated to a Geode member that holds a replicate for the region. This behavior is similar to the transactional behavior for partitioned regions, where the partitioned region transaction is forwarded to a member that hosts the primary for the partitioned region update.
The limitation for transactions on normal, preloaded or or empty regions is that, when consistency checking is enabled, a transaction cannot perform a localDestroy
or localInvalidate
operation against the region. Geode throws an UnsupportedOperationInTransactionException
exception in such cases. An application should use a Destroy
or Invalidate
operation in place of a localDestroy
or localInvalidate
when consistency checks are enabled.