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remove None value from a list without removing the 0 value
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366
>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> [x for x in L if x is not None]...
Difference between doseq and for in Clojure
...seq is for executing side-effects and returns nil.
user=> (for [x [1 2 3]] (+ x 5))
(6 7 8)
user=> (doseq [x [1 2 3]] (+ x 5))
nil
user=> (doseq [x [1 2 3]] (println x))
1
2
3
nil
If you want to build a new sequence based on other sequences, use for. If you want to do side-effects (print...
How do I convert a dictionary to a JSON String in C#?
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13 Answers
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How can I create Min stl priority_queue?
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answered Mar 13 '10 at 17:37
James McNellisJames McNellis
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Numpy index slice without losing dimension information
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edited Nov 23 '17 at 5:53
Atcold
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answe...
How to declare std::unique_ptr and what is the use of it?
...accepts a T*).
In the first example:
unique_ptr<int> uptr (new int(3));
The pointer is the result of a new expression, while in the second example:
unique_ptr<double> uptr2 (pd);
The pointer is stored in the pd variable.
Conceptually, nothing changes (you are constructing a uniqu...
Why does Lua have no “continue” statement?
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edited Apr 1 '13 at 20:56
finnw
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How to subtract date/time in JavaScript? [duplicate]
...e() - new Date(dateStr.replace(/-/g,'/')));
i.e. turning "2011-02-07 15:13:06" into new Date('2011/02/07 15:13:06'), which is a format the Date constructor can comprehend.
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Reimport a module in python while interactive
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389
This should work:
reload(my.module)
From the Python docs
Reload a previously imported m...
How to replace text between quotes in vi
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183
Use ci", which means: change what inside the double quotes.
You can also manipulate other tex...