gsub method that performs a global substitution (like a search and replace) upon the string


"this is a test".gsub(/t/, 'X')

1.	gsub does multiple substitutions at once
2.	use gsub to eradicate the spaces from text string
3.	Splitting Text into Sentences
4.	Testing Sentence Separation
5.	gsub (or gsub!) replaces a substring (first argument) with a replacement string (second argument)
6.	gsub alll with all
7.	gsub lll with ll
8.	Normalize Ruby source code by replacing tabs with spaces
9.	Transform Windows-style newlines to Unix-style newlines
10.	Use whitespace as the place holder
11.	"FOO bar".gsub(/foo/i, "The bar").gsub(/bar/m, "result")
12.	"Here is number #123".gsub(/[a-z]/i, "#").gsub(/#/, "P")
13.	gsub(/[^\d]+/, '').split(//)

gsub method that performs a global substitution (like a search and replace) upon the string : gsub « String « Ruby