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906.Regular expression replace -- How to search and replace text for specified occurrences with reg exp?

User: editor -- 2012-01-25          << 905  907 >>
Hits: 1704
Type: Regular expression replace   
Search all Regular expression replace examples
Description:
How to search and replace text for specified number of occurrences(times) using
regular expression? For example, I want to search the first 3 numbers(with regular expression \d+), and multiply them by 2.
Input Sample:
the first number is 10, the second 
number is 20, the third is 30, the 
fourth is 40
Output Sample:
the first number is 20, the second 
number is 40, the third is 60, the 
fourth is 40
Answer:
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
With Replace Pioneer, you can use 'unit number filter' to 
control how many occurrences you want to search and replace 
a string, even if you are using a regular expression.
1. ctrl-o open text file
2. ctrl-h open 'replace' dialogue
* set 'search for pattern' to the text you want to search:

* set 'unit number filter' to the occurrences you want to 
search(5..10 means 5,6,7,8,9,10):

* set 'replace with pattern' to the text you want to 
replace(you can use function here!):

3. click 'replace', done.
4. ctrl-s save to file.

Screenshot 1:  Replace_Window


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Check Demo of Regular expression replace
Keywords:
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