大约有 40,000 项符合查询结果（耗时：0.0536秒） [XML]
nodeJs callbacks simple example
...00);
Callbacks are used all over the place in Node because Node is built from the ground up to be asynchronous in everything that it does. Even when talking to the file system. That's why a ton of the internal Node APIs accept callback functions as arguments rather than returning data you can assi...
Is there a difference between “raise exception()” and “raise exception” without parenthesis?
.... This first form auto instantiates your exception.
The relevant section from the docs says, "raise evaluates the first expression as the exception object. It must be either a subclass or an instance of BaseException. If it is a class, the exception instance will be obtained when needed by instant...
Hidden Features of JavaScript? [closed]
...cs snippet. ` var _gaq = _gaq || [];`; it prevents overzealous users from overwriting their own work.
– Yahel
Nov 11 '10 at 0:29
...
PHP function to generate v4 UUID
...
Taken from this comment on the PHP manual, you could use this:
function gen_uuid() {
return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
// 32 bits for "time_low"
mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ),...
Checkout remote branch using git svn
...t branch waldo-svn, run
git checkout waldo-svn
git svn rebase
Starting from a trunk-only checkout
To add a Subversion branch to a trunk-only clone, modify your git repository's .git/config to contain
[svn-remote "svn-mybranch"]
url = http://svn.example.com/project/branches/mybranch
...
Intellij IDEA generate for-each/for keyboard shortcut
...
Create for loop from an existing list statement:
Highlight the list
Cmd+Alt+J or Ctrl+Alt+J
Choose Iterate Iterable from the dropdown (i)
https://www.jetbrains.com/phpstorm/help/creating-code-constructs-using-surround-templates.html
...
Git: Ignore tracked files
...
Another approach (from a now deleted answer by Seth Robertson, but I found it helpful so resurrecting it) is to maintain a "tracked" template file, then have local untracked version of it, ex: "config.sample.ini" or "config.ini.template" see h...
ios app maximum memory budget
...
You should watch session 147 from the WWDC 2010 Session videos. It is "Advanced Performance Optimization on iPhone OS, part 2".
There is a lot of good advice on memory optimizations.
Some of the tips are:
Use nested NSAutoReleasePools to make sure you...
switch() statement usage
...oshuaUlrich ...which benchmark function are you using? Not the obvious one from the "benchmark" package it seems?
– Tommy
Oct 19 '11 at 18:52
...
Why does python use 'else' after for and while loops?
...p has values unless a break statement is explicity run as in this example. From the docs above: "The else clause has another perceived problem: if there is no break in the loop, the else clause is functionally redundant.". e.g. for x in [1, 2, 3]:\n print x\n else:\n print 'this executes due to no b...