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Difference between array_map, array_walk and array_filter
What exactly is the difference between array_map , array_walk and array_filter . What I could see from documentation is that you could pass a callback function to perform an action on the supplied array. But I don't seem to find any particular difference between them.
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Better techniques for trimming leading zeros in SQL Server?
... is supposed to remain blank.
Re-read the original question. This answers what the Questioner wants.
Solution #1:
--This example uses both Leading and Trailing zero's.
--Avoid losing those Trailing zero's and converting embedded spaces into more zeros.
--I added a non-whitespace character ("_") t...
Centering floating divs within another div
...en: did you stop floating when you tried? You won't be able to accomplish what you want as long as you're floating /unless/ you set a fixed width on the container of the floats.
– Ken Browning
Aug 12 '09 at 23:44
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“unrecognized selector sent to instance” error in Objective-C
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@alex gray, What? Proper memory management on the view controller solved the problem... I don't understand how that is not a solution?
– Jasarien
Sep 2 '11 at 9:15
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Abstract Class vs Interface in C++ [duplicate]
...terfaces (the "mature approach") instead of C++ classes (this is basically what COM does, but without the burden of COM infrastructure).
I'd use an interface if I want to define a set of rules using which a component can be programmed, without specifying a concrete particular behavior. Classes that...
How to find event listeners on a DOM node when debugging or from the JavaScript code?
...find out which event listeners are observing a particular DOM node and for what event?
19 Answers
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Ruby on Rails vs ASP.NET MVC 3 for a .NET Guy? [closed]
... Great, thank you. I'll do so. Would you please still comment what one could get with Rails which is available in .MVC from practical perspective given that you have used both?
– iCode
Jun 23 '11 at 20:50
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Oracle SQL: Update a table with data from another table
...l be set to NULL if there is no matching row in t2. That is generally not what you want to happen so the WHERE EXISTS is generally needed.
– Justin Cave
Aug 5 '13 at 15:16
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Favorite (Clever) Defensive Programming Best Practices [closed]
...ou had to choose your Favorite (clever) techniques for defensive coding, what would they be? Although my current languages are Java and Objective-C (with a background in C++), feel free to answer in any language. Emphasis here would be on clever defensive techniques other than those that 70%+ ...
Argument list too long error for rm, cp, mv commands
...no limit except for RAM/memory space:
Dry run to ascertain it will delete what you expect:
for f in *.pdf; do echo rm "$f"; done
And execute it:
for f in *.pdf; do rm "$f"; done
Also this is a portable approach as glob have strong and consistant behavior among shells (part of POSIX spec).
N...