How to pass an array to sub or gsub in ruby?

Question

I have an array of characters that I want to remove from a string:

stops = ["[", "]", "^", "(", ")", "#", "*", "?", "~"]

I want to be able to pass an array and remove all occurrences of these characters so that:

"str [with] unwanted# char*acters"

becomes

"str with unwanted characters"

Answer 1

If you need to delete characters, you can use #delete

 str.delete "[]^()#*?~" 

Answer 2

 "str [with] unwanted# char*acters".gsub(Regexp.union(stops), '') # => "str with unwanted characters" 

Answer 3

 str.tr('[]^()#*?~','') str.tr('[]^()#*?~','abcdefghi')