大约有 43,100 项符合查询结果(耗时:0.0406秒) [XML]
How to create NS_OPTIONS-style bitmask enumerations in Swift?
...
15 Answers
15
Active
...
How to extract the decision rules from scikit-learn decision-tree?
...
21 Answers
21
Active
...
Best way to find if an item is in a JavaScript array? [duplicate]
...
As of ECMAScript 2016 you can use includes()
arr.includes(obj);
If you want to support IE or other older browsers:
function include(arr,obj) {
return (arr.indexOf(obj) != -1);
}
EDIT:
This will not work on IE6, 7 or 8 though. The bes...
How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...
12 Answers
12
Active
...
How to iterate over arguments in a Bash script
...hat I'd like to make a shell/bash script of. I can write it in terms of $1 easily:
8 Answers
...
pandas dataframe columns scaling with sklearn
...
221
I am not sure if previous versions of pandas prevented this but now the following snippet works ...
Operation on every pair of element in a list
... module. It does exactly what you describe.
import itertools
my_list = [1,2,3,4]
for pair in itertools.product(my_list, repeat=2):
foo(*pair)
This is equivalent to:
my_list = [1,2,3,4]
for x in my_list:
for y in my_list:
foo(x, y)
Edit: There are two very similar functions as...
Finding ALL duplicate rows, including “elements with smaller subscripts”
...
130
duplicated has a fromLast argument. The "Example" section of ?duplicated shows you how to use...