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What is the difference between a regular string and a verbatim string?
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answered Jul 22 '10 at 18:19
alc6379alc6379
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What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phon
...idering there's no overhead difference between a varchar(30) and a varchar(100) if you're only storing 20 characters in each, err on the side of caution and just make it 50.
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How can I obtain the element-wise logical NOT of a pandas Series?
...y 1.8.0, Pandas 0.13.1:
In [119]: s = pd.Series([True, True, False, True]*10000)
In [10]: %timeit np.invert(s)
10000 loops, best of 3: 91.8 µs per loop
In [11]: %timeit ~s
10000 loops, best of 3: 73.5 µs per loop
In [12]: %timeit (-s)
10000 loops, best of 3: 73.5 µs per loop
As of Pandas 0...
How can I define a composite primary key in SQL?
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answered Jul 10 '09 at 15:46
cletuscletus
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How to check iOS version?
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1012
The quick answer …
As of Swift 2.0, you can use #available in an if or guard to protect c...
XPath query to get nth instance of an element
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answered Oct 24 '10 at 15:42
Dimitre NovatchevDimitre Novatchev
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MySQL WHERE: how to write “!=” or “not equals”?
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answered Jul 10 '12 at 20:53
RolandoMySQLDBARolandoMySQLDBA
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How can Perl's print add a newline by default?
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101
Perl 6 has the say function that automatically appends \n.
You can also use say in Perl 5.10 ...
Embedding Python in an iPhone app
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answered Sep 11 '10 at 16:23
bbumbbum
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How to vertically align elements in ?
...olbar ul li
{
display: table-cell;
height: 100px;
list-style-type: none;
margin: 10px;
vertical-align: middle;
}
.toolbar ul li a {
display:table-cell;
vertical-align: middle;
heig...