Web Reference: If replacement is a string, that string determines the replacing string that is substituted for the matched text. Each of the examples above uses a simple string as the replacing string. The examples in this section mostly use the String#sub and String#gsub methods; the principles illustrated apply to all four substitution methods. Jul 30, 2018 · In Ruby, string is a sequence of one or more characters. It may consist of numbers, letters, or symbols. Here strings are the objects, and apart from other languages, strings are mutable, i.e. strings can be changed in place instead of creating new strings.
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