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How to get first 5 characters from string [duplicate]
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For single-byte strings (e.g. US-ASCII, ISO 8859 family, etc.) use substr and for multi-byte strings (e.g. UTF-8, UTF-16, etc.) use mb_substr:
// singlebyte strings
$result = substr($myStr, 0, 5);
// multibyte strings
$result = mb_substr($myStr, 0, 5);
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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 ...
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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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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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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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 can I find an element by CSS class with XPath?
...er element name you actually wish to match, unless you wish to search each and every element in the document for the given condition.
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Fastest method to escape HTML tags as HTML entities?
...izing strings that might contain HTML tags, by converting < , > and & to &lt; , &gt; and &amp; , respectively.
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