大约有 47,000 项符合查询结果（耗时：0.0305秒） [XML]
Which regular expression operator means 'Don't' match this character?
*, ?, + characters all mean match this character. Which character means 'don't' match this? Examples would help.
4 Answers...
How to check whether a string is Base64 encoded or not
I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error.
...
How do I create test and train samples from one dataframe with pandas?
I have a fairly large dataset in the form of a dataframe and I was wondering how I would be able to split the dataframe into two random samples (80% and 20%) for training and testing.
...
List all indexes on ElasticSearch server?
I would like to list all indexes present on an ElasticSearch server. I tried this:
22 Answers
...
What is the best way to do a substring in a batch file?
I want to get the name of the currently running batch file without the file extension.
3 Answers
...
How to change height of grouped UITableView header?
I know how to change the height of the section headers in the table view. But I am unable to find any solution to change the default spacing before the first section.
...
Combining two Series into a DataFrame in pandas
I have two Series s1 and s2 with the same (non-consecutive) indices. How do I combine s1 and s2 to being two columns in a DataFrame and keep one of the indices as a third column?
...
Regular expression search replace in Sublime Text 2
I'm looking to do search replace with regular expressions in Sublime Text 2. The documentation on this is rather anemic. Specifically, I want to do a replace on groups, so something like converting this text:
...
Get exit code of a background process
I have a command CMD called from my main bourne shell script that takes forever.
12 Answers
...
CSS I want a div to be on top of everything
How do I make an html div tag to be on top of everything?
6 Answers
6
...