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How to get the nth occurrence in a string?
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11 Answers
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GroupBy pandas DataFrame and select most common value
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Convert a number range to another range, maintaining ratio
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18 Answers
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How to get the first element of an array?
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31 Answers
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Creating java date object from year,month,day
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111
Months are zero-based in Calendar. So 12 is interpreted as december + 1 month. Use
c.set(yea...
Overloading Macro on Number of Arguments
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Simple as:
#define GET_MACRO(_1,_2,_3,NAME,...) NAME
#define FOO(...) GET_MACRO(__VA_ARGS__, FOO3, FOO2)(__VA_ARGS__)
So if you have these macros:
FOO(World, !) # expands to FOO2(World, !)
FOO(foo,bar,baz) # expands to FOO3(foo,bar,baz)
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Can I set an opacity only to the background image of a div?
...Hi there
</div>
CSS
.myDiv {
position: relative;
z-index: 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 c...
How do you connect localhost in the Android emulator? [duplicate]
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Use 10.0.2.2 to access your actual machine.
As you've learned, when you use the emulator, localhost (127.0.0.1) refers to the device's own loopback service, not the one on your machine as you may expect.
You can use 10.0.2.2 to...
How do I parse JSON with Objective-C?
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175
With the perspective of the OS X v10.7 and iOS 5 launches, probably the first thing to recomme...
Best way to iterate through a Perl array
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In terms of speed: #1 and #4, but not by much in most instances.
You could write a benchmark to confirm, but I suspect you'll find #1 and #4 to be slightly faster because the iteration work is done in C instead of Perl, and no needless copying ...