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What is the most efficient way to store a list in the Django models?
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See docs.djangoproject.com/en/3.0/topics/db/examples/many_to_one
– Jon Ison
Jul 2 at 9:42
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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
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Stefan Pochmann
23.2k66 gold badges3232 silver badges8686 bronze badges
answered Dec 30 '11 at 1:30
mu is too shortmu is too short
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How do you append an int to a string in C++? [duplicate]
I'd like it to print Player 4 .
20 Answers
20
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Learning Python from Ruby; Differences and Similarities
...at to the collection each method (if list supported this method):
def some_operation(value):
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collection.each(some_operation)
That doesn't flow very nicely. So, typically the following non-functional approach would be used in Python:
for value in collection:
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Using resources in a sa...
How to go back (ctrl+z) in vi/vim
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answered Mar 22 '19 at 2:32
simhumilecosimhumileco
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How to send an email with Gmail as provider using Python?
... line and use CRLF as EOL markers.
E.g.
msg = "\r\n".join([
"From: user_me@gmail.com",
"To: user_you@gmail.com",
"Subject: Just a message",
"",
"Why, oh why"
])
share
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Loading cross-domain endpoint with AJAX
...ks!
– Joshua Pinter
May 30 '17 at 4:32
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In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?
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Ryan B
3,3281818 silver badges3535 bronze badges
answered Nov 14 '15 at 12:12
bodgixbodgix
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How do I execute a string containing Python code in Python?
....stderr = codeErr
exec code
# restore stdout and stderr
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
print f(4)
s = codeErr.getvalue()
print "error:\n%s\n" % s
s = codeOut.getvalue()
print "output:\n%s" % s
codeOut.close()
codeErr.close()
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How can I apply a function to every row/column of a matrix in MATLAB?
...A = [1 2 3;
4 5 6;
7 8 9]
B = [0 1 2]
You want a function power_by_col which returns in a vector C all the elements in A to the power of the corresponding column of B.
From the above example, C is a 3x3 matrix:
C = [1^0 2^1 3^2;
4^0 5^1 6^2;
7^0 8^1 9^2]
i.e.,
C = [1 2 9;
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