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Extracting the last n characters from a ruby string
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101
Here you have a one liner, you can put a number greater than the size of the string:
"123".spl...
How to display nodejs raw Buffer data as Hex string
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208
This code will show the data buffer as a hex string:
buff.toString('hex');
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input type=file show only button
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answered Feb 11 '13 at 6:07
shibashiba
2,24311 gold badge1212 silver badges99 bronze badges
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UIView bottom border?
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CALayer *bottomBorder = [CALayer layer];
bottomBorder.frame = CGRectMake(0.0f, 43.0f, toScrollView.frame.size.width, 1.0f);
bottomBorder.backgroundColor = [UIColor colorWithWhite:0.8f
alpha:1.0f].CGColor;
[toScrollView.layer addSublayer:bottomBor...
Add column with number of days between dates in DataFrame pandas
...'] - df['B']
In [14]: df
Out[14]:
A B C
one 2014-01-01 2014-02-28 -58 days
two 2014-02-03 2014-03-01 -26 days
Note: ensure you're using a new of pandas (e.g. 0.13.1), this may not work in older versions.
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Can I set an opacity only to the background image of a div?
...ndex: 1;
}
.myDiv .bg {
position: absolute;
z-index: -1;
top: 0;
bottom: 0;
left: 0;
right: 0;
background: url(test.jpg) center center;
opacity: .4;
width: 100%;
height: 100%;
}
See test case on jsFiddle
:before and ::before pseudo-element
Another trick i...
What is the difference between ndarray and array in numpy?
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edited Sep 27 '18 at 14:40
nbro
10.9k1717 gold badges7676 silver badges140140 bronze badges
answered Ap...
Is there any particular difference between intval and casting to int - `(int) X`?
...m which to convert. (int) cannot.
int intval( mixed $var [, int $base = 10 ] )
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How to verify that a specific method was not called using Mockito?
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answered Oct 12 '12 at 16:08
BriceBrice
31.1k77 gold badges7575 silver badges8989 bronze badges
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How to reset Android Studio
I want to reset Android Studio 0.2.13 to the default state. That means reset all settings, remove all projects, all gradle files so that it would act like a fresh installation. What steps do I have to follow to achieve this?
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