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Difference between malloc and calloc?
...em with virtual memory.)
Some compilers even can optimize malloc + memset(0) into calloc for you, but you should use calloc explicitly if you want the memory to read as 0.
If you aren't going to ever read memory before writing it, use malloc so it can (potentially) give you dirty memory from its i...
'IF' in 'SELECT' statement - choose output value based on column values
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1039
SELECT id,
IF(type = 'P', amount, amount * -1) as amount
FROM report
See http://dev....
How to launch Safari and open URL from iOS app
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edited Nov 4 '19 at 0:32
Peter Mortensen
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LINQ .Any VS .Exists - What's the difference?
... conditions defined by the specified predicate.
This exists since .NET 2.0, so before LINQ. Meant to be used with the Predicate delegate, but lambda expressions are backward compatible. Also, just List has this (not even IList)
IEnumerable.Any (Extension method - MSDN)
Determines whether a...
Php multiple delimiters in explode
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answered Feb 10 '11 at 9:45
SergeSSergeS
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Auto margins don't center image in page
...his example the image is not centered. Why? My browser is Google Chrome v10 on windows 7, not IE.
9 Answers
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C# switch statement limitations - why?
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100
This is my original post, which sparked some debate... because it is wrong:
The switch stat...
How to include PHP files that require an absolute path?
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answered Aug 7 '08 at 4:20
Peter CoultonPeter Coulton
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Converting JavaScript object with numeric keys into array
..., in that case a run through JSON.parse would be necessary as well.
In ES2015 there's Object.values to the rescue, which makes this a breeze
var arr = Object.values(obj);
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How do you create a read-only user in PostgreSQL?
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670
Grant usage/select to a single table
If you only grant CONNECT to a database, the user can conn...