If you want to check if a string contains a space, just use this simple regex:
$string =~ m/ /;
or
$string =~ m/\s/;
if you want to check for all "space"-like characters (such as tabs, CR, ...)
CountZero
A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James
