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Regular expression to match a word or its prefix
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140
Square brackets are meant for character class, and you're actually trying to match any one of:...
Python Pandas merge only certain columns
Is it possible to only merge some columns? I have a DataFrame df1 with columns x, y, z, and df2 with columns x, a ,b, c, d, e, f, etc.
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Is it possible to set the stacking order of pseudo-elements below their parent element? [duplicate]
...ext.
#element {
position: relative; /* optional */
width: 100px;
height: 100px;
background-color: blue;
}
#element::after {
content: "";
width: 150px;
height: 150px;
background-color: red;
/* create a new stacking context */
position: ab...
How to elegantly check if a number is within a range?
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157
There are a lot of options:
int x = 30;
if (Enumerable.Range(1,100).Contains(x))
//true
...
Create an array or List of all dates between two dates [duplicate]
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LINQ:
Enumerable.Range(0, 1 + end.Subtract(start).Days)
.Select(offset => start.AddDays(offset))
.ToArray();
For loop:
var dates = new List<DateTime>();
for (var dt = start; dt <= end; dt = dt.AddDays(1))
{
date...
How to change ViewPager's page?
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answered Sep 16 '11 at 14:40
Mark AllisonMark Allison
21.2k88 gold badges4242 silver badges4545 bronze badges
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Git diff to show only lines that have been modified
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188
What you want is a diff with 0 lines of context. You can generate this with:
git diff --unifi...
How do I split a string with multiple separators in javascript?
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731
Pass in a regexp as the parameter:
js> "Hello awesome, world!".split(/[\s,]+/)
Hello,awesome...
How do I add 24 hours to a unix timestamp in php?
...ours due to (among other circumstances) daylight saving time:
strtotime('+1 day', $timestamp);
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how do you filter pandas dataframes by multiple columns
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176
Using & operator, don't forget to wrap the sub-statements with ():
males = df[(df[Gender]...