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In PHP, how do you change the key of an array element?
...r it is not a sequential numerical value. The key is actually an ID number and the value is a count. This is fine for most instances, however I want a function that gets the human-readable name of the array and uses that for the key, without changing the value.
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How to express infinity in Ruby?
...own constant using the following*:
I've checked that in Ruby 1.8.6, 1.8.7, and 1.9.2 you have Float.infinite?.
PositiveInfinity = +1.0/0.0
=> Infinity
NegativeInfinity = -1.0/0.0
=> -Infinity
CompleteInfinity = NegativeInfinity..PositiveInfinity
=> -Infinity..Infinity
*I've verified ...
Understanding :source option of has_one/has_many through of Rails
Please help me in understanding the :source option of has_one/has_many :through association. The Rails API explanation makes very little sense to me.
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jQuery selectors on custom data attributes using HTML5
...col="1"][data-row="2"]') Will this select the div where data-col equals 1 and data-row equals 2, or will it select on either of those?
– Luuuud
Oct 11 '12 at 13:53
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How do I use vi keys in ipython under *nix?
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In case someone's wandering in here recently, IPython 5.0 switched from readline to prompt_toolkit, so an updated answer to this question is to pass an option:
$ ipython --TerminalInteractiveShell.editing_mode=vi
... or to set it globally in...
What does each of the [y,n,q,a,d,/,K,j,J,g,e,?] stand for in context of git -p
... -p mode of git add -p or git stash -p what does each of the letters stand for?
2 Answers
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How to discover number of *logical* cores on Mac OS X?
How can you tell, from the command line, how many cores are on the machine when you're running Mac OS X? On Linux, I use:
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UIlabel layer.cornerRadius not working in iOS 7.1
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I think the best way to set corner radius is:
and be sure the "Clip Subviews" is checked:
Checking "Clip Subviews" is equal to the code addMessageLabel.clipsToBounds = YES;.
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How to Truncate a string in PHP to the word closest to a certain number of characters?
...e a code snippet written in PHP that pulls a block of text from a database and sends it out to a widget on a webpage. The original block of text can be a lengthy article or a short sentence or two; but for this widget I can't display more than, say, 200 characters. I could use substr() to chop off...
How do I configure Notepad++ to use spaces instead of tabs?
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Go to the Preferences menu command under menu Settings, and select Language Menu/Tab Settings, depending on your version. Earlier versions use Tab Settings. Later versions use Language. Click the Replace with space check box. Set the size to 4.
See docu...