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Why are elementwise additions much faster in separate loops than in a combined loop?
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10 Answers
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Should I use 'border: none' or 'border: 0'?
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Both are valid. It's your choice.
I prefer border:0 because it's shorter; I find that easier to read. You may find none more legible. We live in a world of very capable CSS post-processors so I'd recommend you use whatever you prefer and then run it through a "compressor". T...
How do I get the time of day in javascript/Node.js?
...he getHours() method for the Date object.
getHours() return the time from 0 - 23, so make sure to deal with it accordingly. I think 0-23 is a bit more intuitive since military time runs from 0 - 23, but it's up to you.
With that in mind, the code would be something along the lines of:
var date = ...
RuntimeWarning: invalid value encountered in divide
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evadeflow
3,8243030 silver badges3737 bronze badges
answered Apr 16 '14 at 18:05
Yan ZhuYan Zhu
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Return 0 if field is null in MySQL
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Use IFNULL:
IFNULL(expr1, 0)
From the documentation:
If expr1 is not NULL, IFNULL() returns expr1; otherwise it returns expr2. IFNULL() returns a numeric or string value, depending on the context in which it is used.
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How do I convert a float number to a whole number in JavaScript?
... 5 5
~~value // 5 5 5
value | 0 // 5 5 5
value >> 0 // 5 5 5
value >>> 0 // 5 5 5
value - value % 1 // 5 5 5
Negative
// val...
How to generate random SHA1 hash to use as ID in node.js?
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Feb 23 '12 at 6:28
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防挂马：apache禁止访问文件或目录执行权限、禁止运行脚本PHP文件的设置方...
...权限的目录路径，例如：D:/piaoyun.cc/upload">
ErrorDocument 404 /404/404.html
ErrorDocument 403 /404/403.html
<FilesMatch "\.(?i:php|php3|php4)$"> // ?是尽可能多的匹配.php的字符串,i是不区分大小写,然后冒号后面跟上正则表达式，也可以写成：<FilesMat...
window+nginx+php-cgi的php-cgi线程/子进程问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...+php-cgi的php-cgi线程/子进程问题见bbshttp: bbs csdn net topics 390803643 close正常的配置情况下,window的php-cgi是不会出现多线程 子进程的,例如以下配置fastcgi_pass 见bbs
http://bbs.csdn.net/topics/390803643/close
正常的配置情况下,window的php-cgi是...
Algorithm for Determining Tic Tac Toe Game Over
...;
//check end conditions
//check col
for(int i = 0; i < n; i++){
if(board[x][i] != s)
break;
if(i == n-1){
//report win for s
}
}
//check row
for(int i = 0; i < n; i++){
...