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how does multiplication differ for NumPy Matrix vs Array classes?
...en by all means, feel free to use the matrix class... Personally I find it more trouble than it's worth, though.
For arrays (prior to Python 3.5), use dot instead of matrixmultiply.
E.g.
import numpy as np
x = np.arange(9).reshape((3,3))
y = np.arange(3)
print np.dot(x,y)
Or in newer versions ...
How to comment and uncomment blocks of code in the Office VBA Editor
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extract part of a string using bash/cut/split
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How do you read from stdin?
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Here's a more memory efficient (and maybe faster) way to count lines in Python: print(sum(chunk.count('\n') for chunk in iter(partial(sys.stdin.read, 1 << 15), ''))). see wc-l.py
– jfs
Nov ...
INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
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If anyone read down this far. I hope this helped make the checked answer more clear. I know there are some of you who may feel that this sort of thing is pretty straight-forward and that opening a book would have answered this question before it was posted, but the truth is that not everyone lear...
How to merge two sorted arrays into a sorted array? [closed]
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answer[k++] = b[j++];
return answer;
}
Is a little bit more compact but exactly the same!
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How do I remove the first characters of a specific column in a table?
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Java SecurityException: signer information does not match
...JAR files have signatures signed with different certificates - or, perhaps more often, at least one is signed and one or more others are not (which includes classes loaded from directories since those AFAIK cannot be signed).
So either make sure all JARs (or at least those which contain classes fro...
How to raise a ValueError?
...ay, I think find_last(), find_last_index(), or something simlar would be a more descriptive name for this function. Adding to the possible confusion is the fact that Python already has a container object method named __contains__() that does something a little different, membership-testing-wise.
de...
What are the best use cases for Akka framework [closed]
... both in your programming model as in the setup. MQ products you would use more to integrate with other external systems, not to build the 'internals' of a system, which is something you would use actors for.
– Raymond Roestenburg
Jan 2 '13 at 14:17
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