大约有 43,300 项符合查询结果(耗时:0.0516秒) [XML]
Easier way to populate a list with integers in .NET [duplicate]
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212
You can take advantage of the Enumerable.Range() method:
var numberList = Enumerable.Range(1, ...
Is there a math nCr function in python? [duplicate]
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217
The following program calculates nCr in an efficient manner (compared to calculating factorials...
What does tilde-greater-than (~>) mean in Ruby gem dependencies? [duplicate]
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edited Mar 15 '17 at 8:17
Draco Ater
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Is there a way to rollback my last push to Git? [duplicate]
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212
Since you are the only user:
git reset --hard HEAD@{1}
git push -f
git reset --hard HEAD@{1}
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PHP date yesterday [duplicate]
...s using DateTime
$date = new DateTime();
$date->sub(new DateInterval('P1D'));
echo $date->format('F j, Y') . "\n";
Or in your case (more readable/obvious)
$date = new DateTime();
$date->add(DateInterval::createFromDateString('yesterday'));
echo $date->format('F j, Y') . "\n";
(Beca...
Integer.valueOf() vs. Integer.parseInt() [duplicate]
...t parseInt(String s) throws NumberFormatException {
return parseInt(s, 10);
}
public static Integer valueOf(String s, int radix) throws NumberFormatException {
return Integer.valueOf(parseInt(s, radix));
}
public static Integer valueOf(String s) throws NumberFormatException {
return In...
Unpacking a list / tuple of pairs into two lists / tuples [duplicate]
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>>> source_list = ('1','a'),('2','b'),('3','c'),('4','d')
>>> list1, list2 = zip(*source_list)
>>> list1
('1', '2', '3', '4')
>>> list2
('a', 'b', 'c', 'd')
Edit: Note that zip(*iterable) is its own inverse:
>>...
Complex numbers usage in python [closed]
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195
In python, you can put ‘j’ or ‘J’ after a number to make it imaginary, so you can writ...
backbone.js & underscore.js CDN recommendation?
...ks, including:
backbone.js: //cdnjs.cloudflare.com/ajax/libs/backbone.js/1.0.0/backbone-min.js (HTTP | HTTPS)
underscore.js: //cdnjs.cloudflare.com/ajax/libs/underscore.js/1.5.2/underscore-min.js (HTTP | HTTPS)
For convenience, here are the script tags:
Backbone.js
<script type="text/javasc...
Remove duplicate entries using a Bash script [duplicate]
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417
You can sort then uniq:
$ sort -u input.txt
Or use awk:
$ awk '!a[$0]++' input.txt
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