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What is the proper way to check if a string is empty in Perl?
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answered Jan 11 '10 at 23:20
Greg HewgillGreg Hewgill
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how to customize `show processlist` in mysql?
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answered May 30 '09 at 12:09
AndomarAndomar
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通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...级：
limit_conn_zone $server_name zone=perserver:1m;
error_page 500 502 503 504 = @failover;
fastcgi_cache_path
/tmp
levels=1:2
keys_zone=failover:100m
inactive=10d
max_size=10g;
upstream php {
server 127.0.0.1:9000;
server 127.0.0.1:9001;
}
serve...
What replaces cellpadding, cellspacing, valign, and align in HTML5 tables?
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504
/* cellpadding */
th, td { padding: 5px; }
/* cellspacing */
table { border-collapse: separate...
How do I get whole and fractional parts from double in JSP/Java?
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102
http://www.java2s.com/Code/Java/Data-Type/Obtainingtheintegerandfractionalparts.htm
double num...
How do you use the ellipsis slicing syntax in Python?
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105
Ellipsis, or ... is not a hidden feature, it's just a constant. It's quite different to, say, j...
How to get unique values in an array
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120
Since I went on about it in the comments for @Rocket's answer, I may as well provide an example ...
html5 - canvas element - Multiple layers
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<div style="position: relative;">
<canvas id="layer1" width="100" height="100"
style="position: absolute; left: 0; top: 0; z-index: 0;"></canvas>
<canvas id="layer2" width="100" height="100"
style="position: absolute; left: 0; top: 0; z-index: 1;"></canvas>...
python pandas: apply a function with arguments to a series
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170
Newer versions of pandas do allow you to pass extra arguments (see the new documentation). So no...
Combining two expressions (Expression)
...ambda = Expression.Lambda<Func<T,bool>>(body, expr1.Parameters[0]);
This also works well to negate a single operation:
static Expression<Func<T, bool>> Not<T>(
this Expression<Func<T, bool>> expr)
{
return Expression.Lambda<Func<T, bool>&...