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Why CancellationToken is separate from CancellationTokenSource?
... design allows the two
key operations (initiating a cancellation request vs. observing and
responding to cancellation) to be cleanly separated. In particular,
methods that take only a CancellationToken can observe a cancellation
request but cannot initiate one.
Link: .NET 4 Cancellation Fr...
Does making a struct volatile make all its members volatile?
...
From: http://msdn.microsoft.com/en-us/library/145yc477%28v=vs.80%29.aspx
To declare the object pointed to by the pointer as const or volatile, use a declaration of the form:
const char *cpch;
volatile char *vpch;
To declare the value of the pointer — that is, the actual addres...
Check if any ancestor has a class using jQuery
...parents to be found, parents() is faster than closest() jsperf.com/closest-vs-parents-foobar
– Alex
May 7 '14 at 7:42
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Is there a concise way to iterate over a stream with indices in Java 8?
... work. You can't have different segments of a pipeline running in parallel vs sequential. Only the last of parallel or sequential is honored when the terminal operation commences.
– Stuart Marks
Aug 15 '14 at 22:03
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What is the C# equivalent to Java's isInstance()?
...bject (Java java.lang.Class ≣ C# System.Type) of an obj (via .getClass() vs .getType()), Java’s isInstance takes an object as its argument, whereas C#’s IsAssignableFrom expects another System.Type object.
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How to add item to the beginning of List?
...lt;T> requires all items to be moved over. See When should I use a List vs a LinkedList.
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How can I determine the direction of a jQuery scroll event?
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Check current scrollTop vs previous scrollTop
var lastScrollTop = 0;
$(window).scroll(function(event){
var st = $(this).scrollTop();
if (st > lastScrollTop){
// downscroll code
} else {
// upscroll code
}
lastScrollT...
Get value of dynamically chosen class constant in PHP
...s to understand them, but haven't seen much in terms of performance impact vs the accepted answer. THAT is something I'm interested in knowing. Instantiating a new class seems like it'd have a bigger performance hit than simply calling a constant statically. What are your thoughts on that?
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Can you “ignore” a file in Perforce?
...
community wiki
21 revs, 2 users 98%Colonel Panic
2
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What is the difference between call and apply?
...ly. I can't tell you exactly why.
See jsPerf, http://jsperf.com/test-call-vs-apply/3
[UPDATE!]
Douglas Crockford mentions briefly the difference between the two, which may help explain the performance difference... http://youtu.be/ya4UHuXNygM?t=15m52s
Apply takes an array of arguments, while C...