The Ruby Way: Solutions and Techniques in Ruby Programming, Second Edition

2.31. Removing Specific Characters

The delete method removes characters from a string if they appear in the list of characters passed as a parameter:

s1 = "To be, or not to be"
s2 = s1.delete("b")            # "To e, or not to e"
s3 = "Veni, vidi, vici!"
s4 = s3.delete(",!")           # "Veni vidi vici"

This parameter follows the same rules as the one for the count method (see section 2.28, “Counting Characters in Strings” earlier in this chapter); that is, it understands the hyphen and the caret.

There is also a delete! method.