大约有 47,000 项符合查询结果（耗时：0.0515秒） [XML]
How do I check which version of NumPy I'm using?
...
392
import numpy
numpy.version.version
...
What is “entropy and information gain”?
...# ------------------------------------------------
Ashley 1 3 6 f
Brian 0 2 5 m
Caroline 1 4 8 f
David 0 2 5 m
The goal is to build a decision tree. An example of a tree ...
FIND_IN_SET() vs IN()
... to the first non-digit (a comma in your case).
Thus,
companyID IN ('1,2,3') ≡ companyID IN (CAST('1,2,3' AS INT)) ≡ companyID IN (1)
In PostgreSQL, you could cast the string into array (or store it as an array in the first place):
SELECT name
FROM orders
JOIN company
ON company...
What is non-blocking or asynchronous I/O in Node.js?
...
322
Synchronous vs Asynchronous
Synchronous execution usually refers to code executing in sequenc...
How to determine if a number is odd in JavaScript
...
360
Use the below code:
function isOdd(num) { return num % 2;}
console.log("1 is " + isOdd(1...
Return two and more values from a method
...
def sumdiff(x, y)
return x+y, x-y
end
#=> nil
sumdiff(3, 4)
#=> [7, -1]
a = sumdiff(3,4)
#=> [7, -1]
a
#=> [7, -1]
a,b=sumdiff(3,4)
#=> [7, -1]
a
#=> 7
b
#=> -1
a,b,c=sumdiff(3,4)
#=> [7, -1]
a
#=> 7
b
#=> -1
c
#=> nil
...
Difference between float and decimal data type
...mysql> insert into numbers values (100, 100);
mysql> select @a := (a/3), @b := (b/3), @a * 3, @b * 3 from numbers \G
*************************** 1. row ***************************
@a := (a/3): 33.333333333
@b := (b/3): 33.333333333333
@a + @a + @a: 99.999999999000000000000000000000
@b + @b...
Looping over a list in Python
...with sublists in it. I want to print all the sublists with length equal to 3.
4 Answers
...
How to make the 'cut' command treat same sequental delimiters as one?
...
|
edited Apr 23 '18 at 23:03
Austin Adams
6,45533 gold badges2020 silver badges2727 bronze badges
...
How can I reorder a list? [closed]
...
230
You can do it like this
mylist = ['a', 'b', 'c', 'd', 'e']
myorder = [3, 2, 0, 1, 4]
mylist = ...