keepAfter, keepBefore, keepBetween, keepChars #62
Description
Hi, this is a feature suggestion to this awesome library.
The suggested functions are as follows:
- keepAfter(text, after_string, instance_num*)
- keepBefore(text, before_string, instance_num*)
- keepBetween(text, keep_start, keep_end)
- keepChars(text, keep_string)
*optional arguments
These are inspired by a program called EasyMorph. And for more info I'll link to their documentation.
keepAfter
This function returns characters after the first occurrence of after_string in text, if found. If after_string is not found within text and "empty" value is returned.
keepAfter('a/b/c/d', 'b') //Returns '/c/d'
keepBefore
This function returns characters before the first occurrence of before_string in text, if found. If before_string is not found within text and "empty" value is returned.
keepBefore('5pm', 'pm') //Returns '5'
keepBetween
This function returns the characters between the first occurrence of keep_start and the first occurrence of keep_end in text.
keepBetween('Mary Joe Smith', 'Mary ', ' Smith') //Returns 'Joe'
keepChars
This function keeps only the characters given in keep_string and removes the others from text.
keepChars('a1b2c3', 'abc') //Returns 'abc'