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Delete an element from a dictionary
..., and also using linear space. For small dicts, this is not a problem. But if you're planning to make lots of copies of large dicts, you probably want a different data structure, like a HAMT (as described in this answer).
sh...
Dictionary returning a default value if the key does not exist [duplicate]
...orms, these extensions work when key doesn't exist, but TryGetValue throws if key is null. Knowing whether key is nullable or not would make this a trivial check.
– ProfK
Sep 27 '12 at 6:12
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Difference between “git checkout ” and “git checkout -- ”
... point as a file name, no matter what it looks like." This is not Git-specific, it's a general Unix command line convention. Normally you use it to clarify that an argument is a file name rather than an option, e.g.
rm -f # does nothing
rm -- -f # deletes a file named "-f"
git checkout1 ...
Python: split a list based on a condition?
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good = [x for x in mylist if x in goodvals]
bad = [x for x in mylist if x not in goodvals]
is there a more elegant way to do this?
That code is perfectly readable, and extremely clear!
# files looks like: [ ('file1.jpg', 33L, '.jpg'), ('file...
Installing pip packages to $HOME folder
...to $HOME/Library/Python. This might change in a future release. But, for now, on 2.7 (and 3.2, if hg were supported on Python 3), the above locations will be $HOME/Library/Python/x.y/bin/hg and $HOME/Library/Python/x.y/lib/python/site-packages.
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Discuz X3涂鸦板无法使用问题解决 - 更多技术 - 清泛网 - 专注C/C++及内核技术
..."^(https?|ftp|gopher|news|telnet|mms|rtsp):\\/\\/", "i");
if (this.configURL.match(loc1) === null && this.configURL.indexOf("://") == -1)
{
this.xmlRequest = new flash.net.URLRequest(this.configURL);
this.xmlLoader = new fla...
phpcms与ucenter整合常见问题与解答 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...示例:
function synlogin($get, $post) {
global $_G;
if(!API_SYNLOGIN) {
return API_RETURN_FORBIDDEN;
}
header('P3P: CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"');
$cookietime = 31536000;
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Best way to determine user's locale within browser
...ice in the HTML, and use JavaScript to parse the language header. I don't know of any existing library code to do this, though, since Accept-Language parsing is almost always done on the server side.
Whatever you end up doing, you certainly need a user override because it will always guess wrong fo...
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
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Thread-safe List property
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If you are targetting .Net 4 there are a few options in System.Collections.Concurrent Namespace
You could use ConcurrentBag<T> in this case instead of List<T>
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