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Does free(ptr) where ptr is NULL corrupt memory?
...her allocation. If ptr is a null pointer, no action occurs.
See ISO-IEC 9899.
That being said, when looking at different codebases in the wild, you'll notice people sometimes do:
if (ptr)
free(ptr);
This is because some C runtimes (I for sure remember it was the case on PalmOS) would crash w...
XPath - Selecting elements that equal a value
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178
The XPath spec. defines the string value of an element as the concatenation (in document order) ...
setting multiple column using one update
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answered Sep 8 '10 at 12:00
PekkaPekka
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The 'json' native gem requires installed build tools
I have ruby 1.9.2p180 (2011-02-18) [i386-mingw32] installed on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error.
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How to get the index of a maximum element in a numpy array along one axis
...iroeumiro
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Objective-C formatting string for boolean?
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answered Apr 8 '10 at 22:18
Michael Myers♦Michael Myers
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What is a Lambda?
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answered Sep 29 '08 at 19:12
EeveeEevee
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is vs typeof
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168
This should answer that question, and then some.
The second line, if (obj.GetType() == typeof(C...
Python - 'ascii' codec can't decode byte
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"你好".encode('utf-8')
encode converts a unicode object to a string object. But here you have invoked it on a string object (because you don't have the u). So python has to convert the string to a unicode object first. So it does the equivale...
Get margin of a View
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180
try this:
View view = findViewById(...) //or however you need it
LayoutParams lp = (LayoutPara...