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How do you check if a variable is an array in JavaScript? [duplicate]
...one you have chosen.
variable.constructor === Array
This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript engines.
If you are having issues with finding out if an objects property is...
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
...
In case someone else gets confused by this, I found a strange thing: my terminal uses utf-8, and when I print my utf-8 strings it works nicely. However when I pipe my programs output to a file, it throws a UnicodeEncodeError. In fact, ...
Number of lines in a file in Java
I use huge data files, sometimes I only need to know the number of lines in these files, usually I open them up and read them line by line until I reach the end of the file
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jQuery - Get Width of Element when Not Visible (Display: None)
It seems like in jQuery when an element is not visible width() returns 0. Makes sense, but I need to get the width of a table in order to set the width of the parent before I show the parent.
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How do I switch to another subversion branch in Intellij?
...s blind and dumb. Actually i expected a "switch" option in the svn context menu also. But indeed it is to be found somewhere else.
– TjerkW
Mar 21 '13 at 10:01
2
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Cleaning up old remote git branches
...rigin --prune
and feel free to add --dry-run to the end of your git statement to see the result of running it without actually running it.
Docs for git remote prune and git branch.
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improv...
What is the difference between a reference type and value type in c#?
Some guy asked me this question couple of months ago and I couldn't explain it in detail. What is the difference between a reference type and a value type in C#?
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Python multiprocessing pool.map for multiple arguments
...sing library, is there a variant of pool.map which supports multiple arguments?
19 Answers
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Why does one often see “null != variable” instead of “variable != null” in C#?
...ed legal code):
// Probably wrong
if (x = 5)
when you actually probably meant
if (x == 5)
You can work around this in C by doing:
if (5 == x)
A typo here will result in invalid code.
Now, in C# this is all piffle. Unless you're comparing two Boolean values (which is rare, IME) you can writ...
Creating .pem file for APNS?
...ficates category. You will see an expandable option called “Apple Development Push Services”
Right click on “Apple Development Push Services” > Export “Apple Development Push Services ID123″. Save this as apns-dev-cert.p12 file somewhere you can access it. There is no need to enter a ...