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Efficient way to determine number of digits in an integer
...then reverse the tests: if (x < 10) return 1; if (x < 100) return 2; etc., so that the function will do less tests and exit faster.
– squelart
Sep 28 '09 at 23:44
29
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Visually managing MongoDB documents and collections [closed]
...ly tedious to have to keep searching for documents, copy-and-pasting OIDs, etc., especially from a command prompt window (ever tried to "mark" text that wraps multiple lines?)
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How can I implement a tree in Python?
...so a powerful API with:
simple tree creation
simple tree modification
pre-order tree iteration
post-order tree iteration
resolve relative and absolute node paths
walking from one node to an other.
tree rendering (see example above)
node attach/detach hookups
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How to prevent favicon.ico requests?
...this:-
If the server document root is say /var/www/html then add this to /etc/httpd/conf/httpd.conf:-
Alias /favicon.ico "/var/www/html/favicon.ico"
<Directory "/var/www/html">
<Files favicon.ico>
ExpiresActive On
ExpiresDefault "access plus 1 month"
</Files>...
Git push existing repo to a new and different remote repo server?
...really want to simply push your local repository (with its local branches, etc.) to the new remote or do you really want to mirror the old remote (with all its branches, tags, etc) on the new remote? If the latter here's a great blog on How to properly mirror a git repository.
I strongly encourage...
How to get the number of days of difference between two dates on mysql?
...iff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');
(note the opposite order of arguments compared to datediff).
Some examples:
select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');
returns 0
select timestampdiff(DAY, '2016-04-13 11:00:00', '2016-04-14 11:00:00');
returns 1
s...
“Keep Me Logged In” - the best approach
... hash_hmac('sha256', $cookie, SECRET_KEY);
$cookie .= ':' . $mac;
setcookie('rememberme', $cookie);
}
Then, to validate:
function rememberMe() {
$cookie = isset($_COOKIE['rememberme']) ? $_COOKIE['rememberme'] : '';
if ($cookie) {
list ($user, $token, $mac) = explode(':', ...
How do you test functions and closures for equality?
...exact purpose of freeing the compiler to break function equality freely in order to yield better optimizations.
– Alexander - Reinstate Monica
Jan 3 '19 at 4:44
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URL query parameters to dict python
...y strings, taking into account that keys can occur more than once and that order may matter.
If you are still on Python 2, urllib.parse was called urlparse.
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How to iterate object in JavaScript? [duplicate]
...w through, and you may not necessarily get array elements in their correct order, or even in any consistent order.
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