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Maximum Java heap size of a 32-bit JVM on a 64-bit OS
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91
You can ask the Java Runtime:
public class MaxMemory {
public static void main(String[] ar...
How do I tell git-svn about a remote branch created after I fetched the repo?
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janosjanos
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Regex exactly n OR m times
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91
There is no single quantifier that means "exactly m or n times". The way you are doing it is fi...
Are Javascript arrays sparse?
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Justin LoveJustin Love
4,2671919 silver badges3535 bronze badges
4
...
Uber5岁了，一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术
...市场的广阔前景。据艾瑞咨询于2014年7月1日发布的《中国在线租车行业研究报告》，2013年，中国租车市场规模为343.4亿元，2006年至2016年10年间，平均增速26%，预计到2016年，租车市场规模将达486.7亿元。
巨额补贴滋生出了一项新...
How to pip install a package with min and max version range?
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91
you can also use:
pip install package==0.5.*
which is more consistent and easy to read.
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How to make div background color transparent in CSS
...lt;/button>
<div id="box3" style="display:none;" ><img src="xxx"></div>
CSS:
#box {
background-color: #ffffff;
height:400px;
width: 1200px;
position: absolute;
top:30px;
z-index:1;
}
#box2 {
background-color: #ffffff;
height:400px;
width: 1200px;
position: absolute;
top:30...
Loading cross-domain endpoint with AJAX
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Kevin BKevin B
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showDialog deprecated. What's the alternative?
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91
From http://developer.android.com/reference/android/app/Activity.html
public final void sho...
Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...-1.42 -0.11 -0.18 -0.44
7 E F -0.00 1.42 -0.26 1.17
8 E F 0.91 -0.47 1.35 -0.34
9 G H 1.48 -0.63 -1.14 0.17
First let's use .size() to get the row counts:
In [3]: df.groupby(['col1', 'col2']).size()
Out[3]:
col1 col2
A B 4
C D 3
E F 2
G ...