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Are Swift variables atomic?
...
apple.developer.com Dispatch
Grand Central Dispatch (GCD) and
Dispatch Queues in Swift 3
Creating Thread-Safe Arrays in
Swift
Mutexes and closure capture in Swift
Implemented types
AtomicArray
AtomicInteger
AtomicValue
Main Idea
class Example {
private lazy var semaphore = DispatchSe...
Under what circumstances are linked lists useful?
...hese cases, because main operations can be carried out with a single CAS (+retries).
In a modern GC-d environment - such as Java and .NET - the ABA problem can easily be avoided.
Just wrap items you add in freshly created nodes and do not reuse those nodes - let the GC do its work.
The page on the ...
栈和队列的面试题Java实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...是一样的；出队时，出的永远都是head结点。
public class Queue {
public Node head;
public Node curent;
//方法：链表中添加结点
public void add(int data) {
if (head == null) {
head = new Node(data);
curent = head;
...
How do you use the ellipsis slicing syntax in Python?
...thing to do with slices: I often use it in intra-thread communication with queues, as a mark that signals "Done"; it's there, it's an object, it's a singleton, and its name means "lack of", and it's not the overused None (which could be put in a queue as part of normal data flow). YMMV.
...
Check play state of AVPlayer
...layhead in an AVPlayer object" by using addPeriodicTimeObserverForInterval:queue:usingBlock: or addBoundaryTimeObserverForTimes:queue:usingBlock:.
Example is from Apple:
// Assume a property: @property (retain) id playerObserver;
Float64 durationSeconds = CMTimeGetSeconds([<#An asset#> dur...
Understanding dispatch_async
...
The main reason you use the default queue over the main queue is to run tasks in the background.
For instance, if I am downloading a file from the internet and I want to update the user on the progress of the download, I will run the download in the priority ...
What is the difference between the add and offer methods in a Queue in Java?
Take the PriorityQueue for example http://java.sun.com/j2se/1.5.0/docs/api/java/util/PriorityQueue.html#offer(E)
8 Answe...
Core pool size vs maximum pool size in ThreadPoolExecutor
...ng thread pool size is 1, core pool size is
5, max pool size is 10 and the queue is 100.
As requests come in,
threads will be created up to 5 and then tasks will be added to the
queue until it reaches 100. When the queue is full new threads will be
created up to maxPoolSize. Once all the threads are...
What Does 'Then' Really Mean in CasperJS
...
Isn't the so called 'stack' actually a queue? The steps are executed in order, had it been a stack wouldn't we expect step 3, step 2, step 1?
– Reut Sharabani
Oct 20 '13 at 16:09
...
What are the differences between Abstract Factory and Factory design patterns?
...ctory
In the example below we design an interface so that we can decouple queue creation from a messaging system and can therefore create implementations for different queue systems without having to change the code base.
interface IMessageQueueFactory
{
IMessageQueue CreateOutboundQueue(string ...