大约有 40,000 项符合查询结果（耗时：0.0843秒） [XML]
Fastest way to check if a file exist using standard C++/C++11/C?
...
However, it may fail if file was locked by another program or if there's no access to the file.
– Jet
Jun 8 '15 at 18:48
2
...
Understanding $.proxy() in jQuery
...l()
.apply()
If we have a function foobar() we can change the this value by calling:
foobar.call({test: 5});
Now we could access in foobar the object we passed in:
function foobar() {
this.test // === 5
}
This is exactly what jQuery.proxy() does. It takes a function and context (which i...
How to dynamically change a web page's title?
... @CpnCrunch is correct! Google will index the title that was changed by JavaScript. I haven't tested on other search bots.Don't always assume a bot doesn't execute JavaScript. I created a new answer below, and then realized that simply showing and hiding tabs without changing the URL makes thi...
How to force a SQL Server 2008 database to go Offline
...
@radbyx: MSDN says to use master when operating DB's state
– abatishchev
Jun 10 '10 at 15:36
17
...
Set a persistent environment variable from cmd.exe
...t windows machines, but I don't want to be bothered changing them manually by getting on the properties screen of "My Computer"
...
Thread pooling in C++11
...g to Num_Threads, it's better not to create new ones, or destroy old ones (by joining). There will be performance penalty, might even make your application goes slower than the serial version.
Each C++11 thread should be running in their function with an infinite loop, constantly waiting for new ta...
Check play state of AVPlayer
...an:
"track changes in the position of the playhead in an AVPlayer object" by using addPeriodicTimeObserverForInterval:queue:usingBlock: or addBoundaryTimeObserverForTimes:queue:usingBlock:.
Example is from Apple:
// Assume a property: @property (retain) id playerObserver;
Float64 durationSecond...
Is there a way to give a specific file name when saving a file via cURL?
...tion or its alias --output, or redirect shell output to the file of choice by using >.
curl -o /path/to/local/file http://url.com
curl http://url.com > /path/to/local/file
If you want to preserve the original file name from the remote server, use the -O option or its alias --remote-name.
...
ScalaTest in sbt: is there a way to run a single test without tags?
I know that a single test can be ran by running, in sbt,
5 Answers
5
...
Define global variable in a JavaScript function
...cit globals, but don't do it on purpose and do your best to avoid doing it by accident, perhaps by using ES5's "use strict".)
All that said: I'd avoid global variables if you possibly can (and you almost certainly can). As I mentioned, they end up being properties of window, and window is already p...