大约有 44,500 项符合查询结果（耗时：0.0378秒） [XML]
How to change the output color of echo in Linux
...
2435
You can use these ANSI escape codes:
Black 0;30 Dark Gray 1;30
Red 0...
How can I redirect the output of the “time” command?
... |
edited Mar 9 '10 at 12:37
Motti
95.3k4242 gold badges176176 silver badges242242 bronze badges
answe...
Active Record - Find records which were created_at before today
...
Using ActiveRecord the standard way:
MyModel.where("created_at < ?", 2.days.ago)
Using the underlying Arel interface:
MyModel.where(MyModel.arel_table[:created_at].lt(2.days.ago))
Using a thin layer over Arel:
MyModel.where(MyModel[:created_at] < 2.days.ago)
Using squeel:
MyModel.w...
Force LF eol in git repo and working copy
...
237
Without a bit of information about what files are in your repository (pure source code, images...
What's the difference between console.dir and console.log?
.....
You can also see a clear difference with arrays (e.g., console.dir([1,2,3])) which are logged differently from normal objects:
> console.log([1,2,3])
[1, 2, 3]
> console.dir([1,2,3])
* Array[3]
0: 1
1: 2
2: 3
length: 3
* __proto__: Array[0]
concat: function c...
how to convert binary string to decimal?
... base in which the string representation is:
var digit = parseInt(binary, 2);
See it in action.
share
|
improve this answer
|
follow
|
...
PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
... $item is still a reference to some value which is also being used by $arr[2]. So each foreach call in the second loop, which does not call by reference, replaces that value, and thus $arr[2], with the new value.
So loop 1, the value and $arr[2] become $arr[0], which is 'foo'.
Loop 2, the value and ...
How to extract the decision rules from scikit-learn decision-tree?
...
21 Answers
21
Active
...
How can I verify if one list is a subset of another?
...
Boris
4,70255 gold badges4242 silver badges5252 bronze badges
answered May 16 '13 at 4:59
Yann VernierYann Vern...
How to pad zeroes to a string?
...
2506
Strings:
>>> n = '4'
>>> print(n.zfill(3))
004
And for numbers:
>>...