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Is 'float a = 3.0;' a correct statement?
If I have the following declaration:
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Difference between numpy.array shape (R, 1) and (R,)
In numpy , some of the operations return in shape (R, 1) but some return (R,) . This will make matrix multiplication more tedious since explicit reshape is required. For example, given a matrix M , if we want to do numpy.dot(M[:,0], numpy.ones((1, R))) where R is the number of rows (of co...
Can someone copyright a SQL query? [closed]
I work for a school district. Every year we have to export a list of students from our student management system and send it to a company that handles our online exams.
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Algorithm to generate a crossword
Given a list of words, how would you go about arranging them into a crossword grid?
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How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
Which of them are preferred in which circumstances?
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What's the difference between a proc and a lambda in Ruby?
And when would you use one rather than the other?
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Difference between clustered and nonclustered index [duplicate]
I need to add proper index to my tables and need some help.
6 Answers
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How do I use itertools.groupby()?
I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this:
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Android: When should I use a Handler() and when should I use a Thread?
When I need something to run asynchronously , such as a long running task or a logic that uses the network, or for whatever reason,
Starting a new Thread and running it works fine.
Creating a Handler and running it works as well.
What's the difference? When should I use each one?
What are the...
Calling C++ class methods via a function pointer
How do I obtain a function pointer for a class member function, and later call that member function with a specific object? I’d like to write:
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