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Is there a math nCr function in python? [duplicate]
...nt manner (compared to calculating factorials etc.)
import operator as op
from functools import reduce
def ncr(n, r):
r = min(r, n-r)
numer = reduce(op.mul, range(n, n-r, -1), 1)
denom = reduce(op.mul, range(1, r+1), 1)
return numer // denom # or / in Python 2
As of Python 3.8...
How do you calculate program run time in python? [duplicate]
...ed and what you wanted to time): print timeit.timeit('myOwnFunc()', setup='from __main__ import myOwnFunc', number=1). Without the setup parameter, it will complain that it could not find myOwnFunc.
– Landshark666
Dec 24 '12 at 4:13
...
javascript pushing element at the beginning of an array [duplicate]
...lways work in certain situations, and splice is a good way to remove items from arrays, so knowing how to insert with it is useful
– Cacoon
Feb 5 '18 at 21:40
1
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Convert a space delimited string to list [duplicate]
... 'Samoa',
'Arizona',
'California',
'Colorado']
If you need one random from them, then you have to use the random module:
import random
states = "... ..."
random_state = random.choice(states.split())
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How to assign multiple classes to an HTML container? [closed]
...
From the standard
7.5.2 Element identifiers: the id and class attributes
Attribute definitions
id = name [CS]
This attribute assigns a name to an element. This name
must be unique in a document.
class ...
Why doesn't calling a Python string method do anything unless you assign its output?
...
@Chris_Rands: Looks like you are right, but from outside it does not have a real mutability effect - some implementations check if this is really used, and if not (so mutability would not be observed), it would actually mutate. Is that true?
– Tad...
Is it fine if first response is private with AppCache (Symfony2)?
...k and set cache headers to public and max age(some value).
//code snippet from app.php
$response = $kernel->handle($request);
$response->headers->set('Cache-Control', '');
$response->setPublic();
$response->setMaxAge(86400);
$response->send();
...
Custom global Application class breaks with “android.app.Application cannot be cast to”
...un:
Disable an Instant run
Clean and rebuild the project
Remove the app from device and install it again without Instant run
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Why are my balls disappearing? [closed]
...
Your error comes from this line initially:
var direction1 = Math.atan2(ball1.velocitY, ball1.velocityX);
You have ball1.velocitY (which is undefined) instead of ball1.velocityY. So Math.atan2 is giving you NaN, and that NaN value is propag...
Maven : what is the “runtime” scope purpose? [duplicate]
... isn't an accidental dependency on the code, and also keeps the dependency from being transitive. So that, for example, if module A has a runtime dependency on library X, and module B depends on module A, it does not inherit the dependency on library X. Using "provided" or "compile" would cause B to...