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Split string using a newline delimiter with Python
...nt(data.split()) # ['a,b,c', 'd,e,f', 'g,h,i', 'j,k,l']
str.split, by default, splits by all the whitespace characters. If the actual string has any other whitespace characters, you might want to use
print(data.split("\n")) # ['a,b,c', 'd,e,f', 'g,h,i', 'j,k,l']
Or as @Ashwini Chaudhary...
Covariance, Invariance and Contravariance explained in plain English?
...bove.
At heart, these terms describe how the subtype relation is affected by type transformations. That is, if A and B are types, f is a type transformation, and ≤ the subtype relation (i.e. A ≤ B means that A is a subtype of B), we have
f is covariant if A ≤ B implies that f(A) ≤ f(B)
f ...
When to use thread pool in C#? [closed]
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Idle managed threads eat memory for their stack. By default is 1 MiB per thread. So it is better to have all threads working.
– Vadym Stetsiak
May 13 '11 at 9:03
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UIDevice uniqueIdentifier deprecated - What to do now?
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A UUID created by CFUUIDCreate is unique if a user uninstalls and re-installs the app: you will get a new one each time.
But you might want it to be not unique, i. e. it should stay the same when the user uninstalls and re-installs the app...
Queue.Queue vs. collections.deque
...mind that if you're communicating across threads, you're playing with fire by using deque. deque is threadsafe by accident due to the existence of the GIL. An GIL-less implementation will have completely different performance characteristics, so discounting other implementations isn't wise. Besides,...
Do threads have a distinct heap?
...far as I know each thread gets a distinct stack when the thread is created by the operating system. I wonder if each thread has a heap distinct to itself also?
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When is .then(success, fail) considered an antipattern for promises?
... @ygoe Indeed. done is a Bluebird thing that was basically deprecated by then+unhandled-rejection detection.
– Bergi
Mar 31 '19 at 18:58
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config.assets.compile=true in Rails production, why not?
The default Rails app installed by rails new has config.assets.compile = false in production.
7 Answers
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Difference between git checkout --track origin/branch and git checkout -b branch origin/branch
...te 'abranch', not a branch with a different name.
(That is, as commented by Sebastian Graf, if the local branch did not exist already.
If it did, you would need git checkout -B abranch origin/abranch)
Note: with Git 2.23 (Q3 2019), that would use the new command git switch:
git switch -c <b...
List files in local git repo?
... --name-only HEAD
lists all of the already committed files being tracked by your git repo.
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