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Why use iterators instead of array indices?
...or. See Page 43: ecn.channel9.msdn.com/events/GoingNative12/GN12Cpp11Style.pdf In my experience, I've found a std::vector is faster than a std::list even if I am searching over all of it and removing elements at arbitrary positions.
– David Stone
Apr 17 '12 at ...
How do I get the full path of the current file's directory?
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Python 3
For the directory of the script being run:
import pathlib
pathlib.Path(__file__).parent.absolute()
For the current working directory:
import pathlib
pathlib.Path().absolute()
Python 2 and 3
For the directory ...
Find index of last occurrence of a substring in a string
... str as a variable name. Another variable name that people should avoid in python is abc; there's a module called abc in the native API.
– progyammer
May 28 '19 at 10:31
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Python “raise from” usage
What's the difference between raise and raise from in Python?
1 Answer
1
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How do I create an array of strings in C?
... free; the most recent draft is open-std.org/jtc1/sc22/wg14/www/docs/n1225.pdf)
– Pavel Minaev
Jul 7 '09 at 21:44
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Bulk package updates using Conda
...date --all will update them (note that the latter will not update you from Python 2 to Python 3, but the former will show Python as being outdated if you do use Python 2).
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What's the idiomatic syntax for prepending to a short python list?
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@MattM. If you insert at the front of a list, python has to move all the other items one space forwards, lists can't "make space at the front". collections.deque (double ended queue) has support for "making space at the front" and is much faster in this case.
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How do I check (at runtime) if one class is a subclass of another?
... unit testing of many things, particularly Django's models, much easier. "Python is not Java." Why must python programmers have such chips on their shoulders?
– Michael Bacon
Aug 17 '15 at 18:32
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How to get last items of a list in Python?
...e integers with the slicing operator for that. Here's an example using the python CLI interpreter:
>>> a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a[-9:]
[4, 5, 6, 7, 8, 9, 10, 11, 12]
the important line is a[-9:]
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Python truncate a long string
How does one truncate a string to 75 characters in Python?
17 Answers
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