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How can I tell when a MySQL table was last updated?
...p file in O_RDRW mode
close it again
or alternatively
use touch(), the PHP equivalent of the utimes() function, to change the file timestamp.
On page display:
use stat() to read back the file modification time.
shar...
How can I convert tabs to spaces in every file of a directory?
... I would also add a file matcher like for example for only .php files find ./ -iname "*.php" -type f -exec sed -i 's/\t/ /g' {} \;
– Daniel Luca CleanUnicorn
Mar 26 '13 at 10:04
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Using scanf() in C++ programs is faster than using cin?
...very interesting problem, check it out):
http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=35&page=show_problem&problem=1080
I was getting TLE (time limit exceeded) on my submissions. On these problem solving online judge sites, you have about a 2-3 se...
Why does MYSQL higher LIMIT offset slow the query down?
... more length about "remembering where you left off" in mysql.rjweb.org/doc.php/pagination
– Rick James
Jan 24 '17 at 23:14
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show 4 more com...
栈和队列的面试题Java实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...就能保证min存放的是最小值。但是这样的话，会存在一个问题：如果最小的元素出栈了，那怎么知道剩下的元素中哪个是最小的元素呢？
改进思路：
这里需要加一个辅助栈，用空间换取时间。辅助栈中，栈顶永远保存着当前...
Find out what process registered a global hotkey? (Windows API)
...d: http://web.archive.org/web/*/tds.diamondcs.com.au/dse/detection/hotkeys.php )
– Aaron Thoma
Jul 2 '15 at 17:15
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How to get distinct values for non-key column fields in Laravel?
...ser::select('name')->groupBy('name')->lists('name'); worked fine for php's in_array();
– Pathros
Nov 28 '16 at 15:43
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How to get image height and width using java?
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@php_coder_3809625 the log is in the iterator, so it could be the case that one ImageReader fails, but a subsequent succeeds. If they all fail, then an IOException is raised.
– Andrew Taylor
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Access parent URL from iframe
... your iFrame, say you want this iframe: src="http://www.example.com/mypage.php"
Well, instead of HTML to specify the iframe, use a javascript to build the HTML for your iframe, get the parent url through javascript "at build time", and send it as a url GET parameter in the querystring of your src t...
How to replace a string in multiple files in linux command line
...e-grep to see if the changes were made. Note: For wildcards, try '-name "*.php"' and grep is bad with recursion and wildcards, you need to add --include=*.whatever with -r
– PJ Brunet
Feb 23 '17 at 18:41
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