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What is the purpose of “return await” in C#?
...case when return in normal method and return await in async method behave differently: when combined with using (or, more generally, any return await in a try block).
Consider these two versions of a method:
Task<SomeResult> DoSomethingAsync()
{
using (var foo = new Foo())
{
...
Regular vs Context Free Grammars
...copies of y.) You basically have one "nonterminal" that can be expanded.
Now, what about context-free languages? There's an analogous pumping lemma for context-free languages that breaks the strings in the language into five parts, uvxyz, and where all instances of the language are in uvixyiz, fo...
Bash function to find newest file matching pattern
...s when the filenames can contain funny characters like spaces or newlines. If you can guarantee that the filenames will not contain funny characters then parsing ls is quite safe.
If you are developing a script which is meant to be run by many people on many systems in many different situations the...
google chrome extension :: console.log() from background page?
...
var bkg = chrome.extension.getBackgroundPage();
bkg.console.log('foo');
Now if you want to do the same within content scripts you have to use Message Passing to achieve that. The reason, they both belong to different domains, which make sense. There are many examples in the Message Passing page f...
How can I get zoom functionality for images?
...
UPDATE
I've just given TouchImageView a new update. It now includes Double Tap Zoom and Fling in addition to Panning and Pinch Zoom. The code below is very dated. You can check out the github project to get the latest code.
USAGE
Place TouchImageView.java in your project. It ca...
Adding Only Untracked Files
...l files to the index, but without their content. Files that were untracked now behave as if they were tracked. Their content will be displayed in git diff, and you can add then interactively with git add -p.
share
|...
How do you check if a variable is an array in JavaScript? [duplicate]
...ork as variable instanceof Number always returns false. Update: instanceof now goes 2/3 the speed!
So yet another update
Object.prototype.toString.call(variable) === '[object Array]';
This guy is the slowest for trying to check for an Array. However, this is a one stop shop for any type you're l...
Get current URL path in PHP [duplicate]
I need to get the path from the URL of the current request. For example, if the current URL is:
3 Answers
...
vc/mfc *通配符 批量删除文件 - c++1y / stl - 清泛IT社区，为创新赋能！
...nbsp; FileOp.pTo = NULL;
if (SHFileOperation(&FileOp) != 0)
printf("删除文件:%S失败(Error:%d)\n", delFileName, GetLastError());
&nb...
What is the easiest way to remove the first character from a string?
...-1]
end
def first(how_many = 1)
self[0...how_many]
end
def shift(how_many = 1)
shifted = first(how_many)
self.replace self[how_many..-1]
shifted
end
alias_method :shift!, :shift
end
class Array
def eat!(how_many = 1)
self.replace self[how_many..-1]
end
end
put...