大约有 11,294 项符合查询结果(耗时:0.0226秒) [XML]
How to search by key=>value in a multidimensional array in PHP
Is there any fast way to get all subarrays where a key value pair was found in a multidimensional array? I can't say how deep the array will be.
...
int value under 10 convert to string two digit number
...numeric format strings for more options: http://msdn.microsoft.com/en-us/library/0c899ak8(VS.71).aspx
share
|
improve this answer
|
follow
|
...
Pandas get topmost n records within each group
...
Did you try df.groupby('id').head(2)
Ouput generated:
>>> df.groupby('id').head(2)
id value
id
1 0 1 1
1 1 2
2 3 2 1
4 2 2
3 7 3 1
4 8 4 1
(Keep in mind that...
How to sort an array of hashes in ruby
...
Simples:
array_of_hashes.sort_by { |hsh| hsh[:zip] }
Note:
When using sort_by you need to assign the result to a new variable: array_of_hashes = array_of_hashes.sort_by{} otherwise you can use the "bang" method to modify in place: array_of_hashes.sort_...
Rename master branch for both local and remote Git repositories
I have the branch master which tracks the remote branch origin/master .
15 Answers
...
Are “elseif” and “else if” completely synonymous?
...HP manual:
In PHP, you can also write 'else if' (in two words) and the behavior would be identical to the one of 'elseif' (in a single word). The syntactic meaning is slightly different (if you're familiar with C, this is the same behavior) but the bottom line is that both would result in exactl...
If string is empty then return some default value
Often I need to check if some value is blank and write that "No data present" like that:
6 Answers
...
Sass calculate percent minus px
I want to be able to do the following:
6 Answers
6
...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
...to parse url-encoded strings that are made up of key=value pairs separated by either & or & .
15 Answers
...
Python's os.makedirs doesn't understand “~” in my path
I have a little problem with ~ in my paths.
5 Answers
5
...
