大约有 1,742 项符合查询结果（耗时：0.0120秒） [XML]
How might I find the largest number contained in a JavaScript array?
...ou're talking millions of indices.
Average results of five runs with a 100,000-index array of random numbers:
reduce took 4.0392 ms to run
Math.max.apply took 3.3742 ms to run
sorting and getting the 0th value took 67.4724 ms to run
Math.max within reduce() took 6.5804 ms to run
custom findmax func...
Remove duplicate elements from array in Ruby
...ht:
require 'fruity'
require 'set'
array = [1,2,2,1,4,4,5,6,7,8,5,6] * 1_000
def mithun_sasidharan(ary)
ary.uniq
end
def jaredsmith(ary)
ary & ary
end
def lri(ary)
counts = Hash.new(0)
ary.each { |v| counts[v] += 1 }
counts.select { |v, count| count == 1 }.keys
end
def finks(ary...
Remove characters except digits from string using Python?
...ll, string.digits); x="aaa12333bb445bb54b5b52"' 'x.translate(all, nodig)'
1000000 loops, best of 3: 1.04 usec per loop
$ python -mtimeit -s'import re; x="aaa12333bb445bb54b5b52"' 're.sub(r"\D", "", x)'
100000 loops, best of 3: 7.9 usec per loop
Speeding things up by 7-8 times is hardly peanuts, s...
Finding duplicate values in MySQL
...hanks for that but on large table it takes some time (about 2mn on more 20'000 entries table) and after show 25 first results, if I click to show next one, phpmyadmin show error "#1052 - Column 'id' in order clause is ambiguous"
– bcag2
Apr 24 at 8:44
...
Element-wise addition of 2 lists?
...how to do this in pure python. If you want to do this with arrays with 100.000 elements, you should use numpy:
In [1]: import numpy as np
In [2]: vector1 = np.array([1, 2, 3])
In [3]: vector2 = np.array([4, 5, 6])
Doing the element-wise addition is now as trivial as
In [4]: sum_vector = vector1 ...
IIS does not list a website that matches the launch url
... #@$%ing Run as Administrator has probably cost us developers about 400,000 years in lost development time over the last 6 or 7 years
– joshcomley
Dec 11 '12 at 0:21
9
...
How to print VARCHAR(MAX) using Print Statement?
...could do a WHILE loop based on the count on your script length divided by 8000.
EG:
DECLARE @Counter INT
SET @Counter = 0
DECLARE @TotalPrints INT
SET @TotalPrints = (LEN(@script) / 8000) + 1
WHILE @Counter < @TotalPrints
BEGIN
-- Do your printing...
SET @Counter = @Counter + 1
END
...
Parse date without timezone javascript
...that converts it to your local timezone:
let s = "2005-07-08T11:22:33+0000";
let d = new Date(Date.parse(s));
// this logs for me
// "Fri Jul 08 2005 13:22:33 GMT+0200 (Central European Summer Time)"
// and something else for you
console.log(d.toString())
// this logs
// Fri, 08...
Repeat String - Javascript
...swer), and this answer using my algorithm created 13 years ago
~ October 2000 I published an algorithm for this exact problem which was widely adapted, modified, then eventually poorly understood and forgotten. To remedy this issue, in August, 2008 I published an article http://www.webreference.com...
Get program execution time in the shell
... output format.
Example:
$ time sleep 2
real 0m2.009s
user 0m0.000s
sys 0m0.004s
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