From: Thomas Wieczorek <wieczo.yo@...>
Date: 2008-09-01T17:42:23+09:00
Subject: Re: How to replace a string with given pattern?

On Mon, Sep 1, 2008 at 10:36 AM, Zhao Yi <youhaodeyi@gmail.com> wrote:
> I want to replace a string with the new value on a given regular
> pattern. For example:
>
> "Hello".replace("/H/", "h")  #=> hello
>

You can use String#sub[1] to replace one occurance:
"HHello".sub(/H/, "h") #=> "hHello"

or gsub[2] to replace all:
"HHello".gsub(/H/, "h")

[1] http://apidock.com/ruby/String/gsub
[2] http://apidock.com/ruby/String/gsub