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Why do some C# lambda expressions compile to static methods?
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answered Sep 1 '14 at 22:32
Peter O.Peter O.
26.8k1010 gold badges6363 silver badges8383 bronze badges
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Method call if not null in C#
...oving the race-condition, i.e. you don't need a temporary variable. So normally you'd need:
var handler = SomeEvent;
if(handler != null) handler(this, EventArgs.Empty);
but with:
public static void SafeInvoke(this EventHandler handler, object sender) {
if(handler != null) handler(sender, Eve...
Convert date to datetime in Python
...lue representable by datetime and then getting its time component. Incidentally, datetime.min = datetime(MINYEAR, 1, 1, tzinfo=None) and has a time of 00:00:00. However, I think it is cleaner to explicitly create a 00:00:00 time either through time.min or time(0, 0, 0, 0).
– Fl...
Function return value in PowerShell
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PowerShell has really wacky return semantics - at least when viewed from a more traditional programming perspective. There are two main ideas to wrap your head around:
All output is captured, and returned
The return keyword really just indi...
assertEquals vs. assertEqual in python
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itsjeyd
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answered May 31 '09 at 1:17
Jarret HardieJarret H...
How to make a variadic macro (variable number of arguments)
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The reason for ## before VA_ARGS is that it swallows the preceding comma in case the variable-argument list is empty, eg. FOO("a") expands to printf("a"). This is an extension of gcc (and vc++, maybe), C99 requires at least one argument to be present in place of the elli...
Best exception for an invalid generic type argument
...ere's a way in which NotSupportedException is obviously good enough, especially given its common-sense meaning. Having said that, I'm not sure if it's just right.
Given the purpose of Unconstrained Melody ...
There are various useful things that can be done with generic
methods/classes where ...
Cannot run Eclipse; JVM terminated. Exit code=13
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Okey, I solve it. I just reinstall JDK 64-bit, re-extact eclipse-64bit and edit eclipse.ini again.
– Prince OfThief
Feb 9 '11 at 14:13
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get and set in TypeScript
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})();
So to use it,
var myFoo = new foo();
if(myFoo.bar) { // calls the getter
myFoo.bar = false; // calls the setter and passes false
}
However, in order to use it at all, you must make sure the TypeScript compiler targets ECMAScript5. If you are running the command line compile...
Find intersection of two nested lists?
... 3 filter returns an iterable instead of list, so you need to wrap filter calls with list():
c3 = [list(filter(lambda x: x in c1, sublist)) for sublist in c2]
Explanation:
The filter part takes each sublist's item and checks to see if it is in the source list c1.
The list comprehension is exec...