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What does ~> mean in a gem file [duplicate]
In the gem file for https://github.com/justinfrench/formtastic they have:
1 Answer
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Extract every nth element of a vector
I would like to create a vector in which each element is the i+6th element of another vector.
4 Answers
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How to override a JavaScript function
I'm trying to override a built in parseFloat function in JavaScript .
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How to add not null constraint to existing column in MySQL
I have table name called "Person" with following column names
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Check whether a value is a number in JavaScript or jQuery [duplicate]
...ant to check misCharge is number or not. Is there any method or easy way in jQuery or JavaScript to do this?
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CREATE TABLE IF NOT EXISTS equivalent in SQL Server [duplicate]
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Better yet - use the specific sys.tables catalog view instead of having to remember what obscure xtype a table is...
– marc_s
Jun 29 '11 at 13:40
5
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Maximum length of a table name in MySQL
What is the maximum length of a table name in MySQL?
4 Answers
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Iterating over a numpy array
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I think you're looking for the ndenumerate.
>>> a =numpy.array([[1,2],[3,4],[5,6]])
>>> for (x,y), value in numpy.ndenumerate(a):
... print x,y
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0 0
0 1
1 0
1 1
2 0
2 1
Regarding the performance. It is a...
Difference between datetime and timestamp in sqlserver? [duplicate]
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According to the documentation, timestamp is a synonym for rowversion - it's automatically generated and guaranteed1 to be unique. datetime isn't - it's just a data type which handles dates and times, and can be client-specified on...
Unpacking a list / tuple of pairs into two lists / tuples [duplicate]
...gt; list2
('a', 'b', 'c', 'd')
Edit: Note that zip(*iterable) is its own inverse:
>>> list(source_list) == zip(*zip(*source_list))
True
When unpacking into two lists, this becomes:
>>> list1, list2 = zip(*source_list)
>>> list(source_list) == zip(list1, list2)
True
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