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Fastest way to check if string contains only digits
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@user823959: I am not sure what you mean. Char.IsDigit is part of the mscorelib: msdn.microsoft.com/en-us/library/0t641e58.aspx
– flayn
Sep 18 '13 at 11:38
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Difference between onStart() and onResume()
...d after onRestart() and onCreate() methods just excluding onStart() ? What is its purpose?
12 Answers
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...文件前执行，所以可以忽略输入文件。
$ awk 'BEGIN{printf "What is your name?"; getline name < "/dev/tty" } $1 ~name {print "Found" name on line ", NR "."} END{print "See you," name "."} test。在屏幕上打印”What is your name?",并等待用户应答。当一行输入完毕后...
What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
... new object
If you've read through the first example then you already now what's the purpose of the || {}.
Because if there is no existing FOO object then the OR-case will become active and creates a new object, so you can assign functions to it. Like:
var FOO = {};
FOO.skateboard = function() ...
What does threadsafe mean?
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Eric Lippert has a nice blog post entitled What is this thing you call "thread safe"? about the definition of thread safety as found of Wikipedia.
3 important things extracted from the links :
“A piece of code is thread-safe if it functions correctly during
simulta...
Why JSF calls getters multiple times
... only once at some point of request-based JSF lifecycle and that's exactly what you want.
Here is a summary of all different right ways to preset/load a property.
public class Bean {
private SomeObject someProperty;
@PostConstruct
public void init() {
// In @PostConstruct (wi...
How is std::function implemented?
...e mixed into one function pointer (with an additional parameter that tells what to do) as to save some bytes
raw pointers are used to store the functor object, along with a function pointer in a union, so that when a function object is constructed from an function pointer, it will be stored directly...
What is the difference between Tomcat, JBoss and Glassfish?
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@DavidBlevins so what are now the differences?
– aldo.roman.nurena
Aug 23 '13 at 23:07
23
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Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception?
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In addition to what Jared has already mentioned, you can safely cast to Exception in .NET Framework 2.0 and higher if RuntimeCompatibilityAttribute(WrapNonExceptionThrows=true) has been applied to your assembly (will be added automatically ...
Why no love for SQL? [closed]
...L is declarative. You can't tell the database how it should do stuff, just what you want as result. This would be perfect and very powerful - if you wouldn't have to care about performance. So you end up in writing SQL - reading execution plans - rephrasing SQL trying to influence the execution plan...