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Why is “if not someobj:” better than “if someobj == None:” in Python?
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These are actually both poor practices. Once upon a time, it was considered OK to casually treat None and False as similar. However, since Python 2.2 this is not the best policy.
First, when you do an if x or if not x kind of test, Python has to implicitly convert x to bool...
Padding characters in printf
I am writing a bash shell script to display if a process is running or not.
13 Answers
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Find index of last occurrence of a substring in a string
I want to find the position (or index) of the last occurrence of a certain substring in given input string str .
9 Answers...
How can I restart a Java application?
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Isn't there a small time frame in which two versions of the same app are running at the same time?
– Monir
Oct 31 '14 at 16:27
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How to get the position of a character in Python?
How can I get the position of a character inside a string in python?
9 Answers
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Hidden Features of Xcode
...lue in all the info.plist files. I found 8 files to change.
The number of times a build has failed because I forgot to change this string is ridiculous.
Quickly jump to a Group in the Groups and Files pane
Control ⌃ Option ⌥ Shift ⇧ + <First letter of a Group name>
If yo...
How to write the Fibonacci Sequence?
...Try it in your favourite language and see that this form requires a lot of time as n gets bigger. In fact, this is O(2n) in time.
Go on on the sites I linked to you and will see this (on wolfram):
This one is pretty easy to implement and very, very fast to compute, in Python:
from math import s...
Move assignment operator and `if (this != &rhs)`
...ke a trip to the heap. Anything you can do to avoid a trip to the heap is time & effort well spent. Clients of dumb_array may well want to often assign arrays of the same size. And when they do, all you need to do is a memcpy (hidden under std::copy). You don't want to allocate a new array o...
How to pass an ArrayList to a varargs method parameter?
...zero rather than the size of the array. In short, it's because the compile-time constant enables the use of an optimized method. shipilev.net/blog/2016/arrays-wisdom-ancients
– geg
May 15 '17 at 15:26
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GIT clone repo across local file system in windows
...stion of course will mean that you'll need to have that drive mapped every time you push/pull to/from the laptop. I'm not sure how you rig up ssh to work under windows but if you're going to be doing this a lot it might be worth investigating.
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