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Realistic usage of the C99 'restrict' keyword?
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185
restrict says that the pointer is the only thing that accesses the underlying object. It elimin...
Adding a build configuration in Xcode
I'd like to add a new build configuration in Xcode 5, "QA", to the other three we currently have (Debug, Distribution, Release). However, when I click "Editor > Add Configuration", everything is grayed out. I'm not very familiar with Xcode in the first place, so I'm not sure how to go about doing th...
How do I convert an integer to string as part of a PostgreSQL query?
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Because the number can be up to 15 digits, you'll meed to cast to an 64 bit (8-byte) integer. Try this:
SELECT * FROM table
WHERE myint = mytext::int8
The :: cast operator is historical but convenient. Postgres also conforms to the SQL standard syntax
m...
What is the standard exception to throw in Java for not supported/implemented operations?
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457
java.lang.UnsupportedOperationException
Thrown to indicate that the requested operation is ...
How to sort a dataFrame in python pandas by two or more columns?
..., False])
For example:
In [11]: df1 = pd.DataFrame(np.random.randint(1, 5, (10,2)), columns=['a','b'])
In [12]: df1.sort(['a', 'b'], ascending=[True, False])
Out[12]:
a b
2 1 4
7 1 3
1 1 2
3 1 2
4 3 2
6 4 4
0 4 3
9 4 3
5 4 1
8 4 1
As commented by @renadeen
Sort is...
Store print_r result into a variable as a string or text
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edited Feb 17 '12 at 10:56
kapa
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answered...
How to merge lists into a list of tuples?
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In Python 2:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> zip(list_a, list_b)
[(1, 5), (2, 6), (3, 7), (4, 8)]
In Python 3:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> list(zip(list_a, list_b))
[(1, 5), (2, 6), (3, 7...
Detect if a jQuery UI dialog box is open
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