From: Carlos <angus@...>
Date: 2001-12-17T00:21:14+09:00
Subject: [ruby-talk:28688] Re: How do you do "character filtering" of a string using each_byte.

> > 1) all digits are removed.
> > 2) all lowercase are changed to uppercase.
> > 3) multiple spaces are converted to one space
> > 4) tab is converted to one space.
> 
> See Jim M.'s answer -- also, here's an example of how to do it by
> chaining some nice String methods:
> 
>   str = "What\t   ever 123  YOU want 2 \t have"
>   newstr = str.tr("\t"," ").delete("[0-9]").squeeze.upcase
                              delete("0-9")

is better; he doesn't want to remove the brackets.

>   p newstr # => "WHATEVER YOU WANT HAVE"