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Detect if a NumPy array contains at least one non-numeric value?
...0us
%timeit np.isnan(array1M).any() # 532us
The early-exit method is 3 orders or magnitude speedup (in some cases).
Not too shabby for a simple annotation.
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_=> what does this underscore mean in Lambda expressions?
...nventions) when you need to specify that the expression has a parameter in order to get the code to compile, but you don't really care about it, so you're just going to ignore it.
It's basically exploiting the syntax for what a legal identifier in C# constitutes, and since an identifier can start w...
Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
... the difference? Very approximately, IaaS gives you components you need in order to build things on top of it; PaaS gives you an environment where you just push code and some basic configuration and get a running application. IaaS can give you more power and flexibility, at the cost of having to bui...
What is the most efficient string concatenation method in python?
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Also, .format() has three forms, in order from fast to slow: "{}".format(x), "{0}".format(x), "{x}".format(x=x)
– TemporalWolf
May 1 '17 at 22:45
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Printf width specifier to maintain precision of floating-point value
... the number of digits after the lead digit and decimal point.
So - 1 is in order. Note: This -1 is not in the initial int Digs = DECIMAL_DIG;
printf("%.*e\n", OP_DBL_Digs - 1, OneSeventh);
// 1.4285714285714285e-01
With "%f", the precision field is the number of digits after the decimal point.
F...
Is there a “goto” statement in bash?
... i think this should be the answer. i have a genuine need for go to in order to support resume execution of a script, from a given instruction. this is, in every way but semantic, goto, and semantics and syntactic sugars are cute, but not strictly necessary. great solution, IMO.
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jQuery Selector: Id Ends With?
... I answered the question a long time after an answer was accepted, just in order to add more information for visitors. I hope that people who upvote my answer also upvote the answer to the question.
– Romain Guidoux
Jan 17 '13 at 18:47
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I can’t find the Android keytool
... Linux users have an easier time with this so I won't address them.
So in order to use mapviews in your Android apps, Google wants to check in with them so you can sign off on an Android Maps APIs Terms Of Service agreement. I think they don't want you to make any turn-by-turn GPS apps to compete w...
How to use timeit module
...sort really shine because it performs best when the data already partially ordered).
Here is an example of how to set up a test for sorting:
>>> import timeit
>>> setup = '''
import random
random.seed('slartibartfast')
s = [random.random() for i in range(1000)]
timsort = list.s...
How to change the name of a Django app?
...y -- no problems with the existing historical migrations. Do the steps in order, and propagate the changes everywhere before moving to the following step.
– user85461
Sep 30 '19 at 18:11
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