gsub is a String class method in Ruby which is used to return a copy of the given string with all occurrences of pattern substituted for the second argument.
Syntax: str.gsub(pattern, replacement)
Parameters: Here, str is the given string. pattern may be specified regex or character set to be removed. replacement is the set of characters which is to be put.
Returns:A copy of the string with all occurrences of pattern substituted for the second argument.
Example 1:
# Ruby program to demonstrate # the gsub method # Taking a string and # using the method puts "Sample".gsub(/[amuyt]/, '*')
puts "Program".gsub(/([gmra])/, '<\1>')
|
Output:
S**ple Po
Example 2:
# Ruby program to demonstrate # the gsub method # Taking a string and # using the method puts "Ruby".gsub(/[tyru]/, '<\1>')
puts "String".gsub(/([igtr])/, '*')
|
Output:
Rb S***n*