method
tr
tr(p1, p2)
public
Returns a copy of str with the characters in from_str replaced by the corresponding characters in to_str. If to_str is shorter than from_str, it is padded with its last character. Both strings may use the c1–c2 notation to denote ranges of characters, and from_str may start with a ^, which denotes all characters except those listed.
"hello".tr('aeiou', '*') #=> "h*ll*" "hello".tr('^aeiou', '*') #=> "*e**o" "hello".tr('el', 'ip') #=> "hippo" "hello".tr('a-y', 'b-z') #=> "ifmmp"