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Is there a way to iterate over a range of integers?
Go's range can iterate over maps and slices, but I was wondering if there is a way to iterate over a range of numbers, something like this:
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How to “test” NoneType in python?
...ariable has None in it or not.
Quoting from is docs,
The operators is and is not test for object identity: x is y is true if and only if x and y are the same object. x is not y yields the inverse truth value.
Since there can be only one instance of None, is would be the preferred way to check...
What is the proper way to re-throw an exception in C#? [duplicate]
...trace resulting from "throw ex", you'll see that it ends on that statement and not at the real source of the exception.
Basically, it should be deemed a criminal offense to use "throw ex".
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Difference between decimal, float and double in .NET?
What is the difference between decimal , float and double in .NET?
18 Answers
18
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linq query to return distinct field values from a list of objects
...f you just want the typeID values, it's easy - project to that with Select and then use the normal Distinct call.)
In MoreLINQ we have the DistinctBy operator which you could use:
var distinct = list.DistinctBy(x => x.typeID);
This only works for LINQ to Objects though.
You can use a groupin...
Initial size for the ArrayList
... immediately obvious from the api why you cannot set BOTH the initial size and the initial capacity in a single constructor call. You sort of have to read through the api and say "Oh, I guess ArrayList does not have a method or constructor to do that"
– demongolem
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怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...vs2005或VC建立一个Win32工程，然后看自动生成的代码：
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
...
// 主消息循环:
while (G...
How to wait for several Futures?
Suppose I have several futures and need to wait until either any of them fails or all of them succeed.
8 Answers
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Wait one second in running program
...tion(500, new Action(() => { this.RunAction(); }));
//Note Forms.Timer and Timer() have similar implementations.
public static void DelayAction(int millisecond, Action action)
{
var timer = new DispatcherTimer();
timer.Tick += delegate
{
action.Invoke();
timer.Stop...
Core pool size vs maximum pool size in ThreadPoolExecutor
What exactly is the difference between core pool size and maximum pool size when we talk in terms of ThreadPoolExecutor ?
Can it be explained with the help of an example?
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