大约有 44,000 项符合查询结果（耗时：0.0478秒） [XML]
How to escape regular expression special characters using javascript? [duplicate]
I need to escape the regular expression special characters using java script.How can i achieve this?Any help should be appreciated.
...
jQuery: outer html() [duplicate]
imagine what we have something like this:
4 Answers
4
...
Pass column name in data.table using variable [duplicate]
In following example, I am creating a data table having column name ‘x’ and ‘v’
1 Answer
...
How to count the frequency of the elements in an unordered list?
I need to find the frequency of elements in an unordered list
33 Answers
33
...
Adding a column to a data.frame
I have the data.frame below. I want to add a column that classifies my data according to column 1 ( h_no ) in that way that the first series of h_no 1,2,3,4 is class 1, the second series of h_no (1 to 7) is class 2 etc. such as indicated in the last column.
...
How to test if list element exists?
I would like to test if an element of a list exists, here is an example
7 Answers
7
...
How to avoid explicit 'self' in Python?
I have been learning Python by following some pygame tutorials .
11 Answers
11
...
Why does PHP 5.2+ disallow abstract static class methods?
After enabling strict warnings in PHP 5.2, I saw a load of strict standards warnings from a project that was originally written without strict warnings:
...
Combine two or more columns in a dataframe into a new column with a new name
For example if I have this:
8 Answers
8
...
Spring: Why do we autowire the interface and not the implemented class?
Example
2 Answers
2
...