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Why does isNaN(“ ”) (string with spaces) equal false?
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But parseInt("123abcd") returns 123, which means isNaN(parseInt("123abcd")) will return false while it should return true!
– Pawan Nogariya
Dec 27 '12 at 6:23
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“rm -rf” equivalent for Windows?
...h is aliased to del, erase, rd, ri, rm and rmdir) and takes a -Recurse argument that can be shorted to -r
rd -r "path"
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get CSS rule's percentage value in jQuery
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There's no built-in way, I'm afraid. You can do something like this:
var width = ( 100 * parseFloat($('.largeField').css('width')) / parseFloat($('.largeField').parent().css('width')) ) + '%';
shar...
How to query SOLR for empty fields?
I have a large solr index, and I have noticed some fields are not updated correctly (the index is dynamic).
7 Answers
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What is the difference between String and string in C#?
...It's like int vs. System.Int32.
As far as guidelines, it's generally recommended to use string any time you're referring to an object.
e.g.
string place = "world";
Likewise, I think it's generally recommended to use String if you need to refer specifically to the class.
e.g.
string greet = S...
PHP memory profiling
What's a good way to profile a PHP page's memory usage? For example, to see how much memory my data is using, and/or which function calls are allocating the most memory.
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How do you reset the stored credentials in 'git credential-osxkeychain'?
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For some reason I couldn't find any Git/GitHub credentials within the Keychain app, but this worked. Thanks!
– Donald
Mar 22 '16 at 15:35
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Install Node.js on Ubuntu
I'm trying install Node.js on Ubuntu 12.10, but the terminal shows me an error about lost packages. I tried with this:
18 A...
List attributes of an object
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The issue of dict usage just showed up on r/python. someone pointed out that vars(a) is equivalent to a.__dict__
– David
Jan 12 '13 at 5:15
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How to create a custom string representation for a class object?
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Implement __str__() or __repr__() in the class's metaclass.
class MC(type):
def __repr__(self):
return 'Wahaha!'
class C(object):
__metaclass__ = MC
print C
Use __str__ if you mean a readable stringification, use __repr...