http://www.perlmonks.org?node_id=1004290


in reply to read string (which is in binary) and make decision

use Modern::Perl; while (<DATA>) { chomp; say "$_ : ", ( /^0+$/ or /^1+$/ ) ? 'PASS' : ( /^0+1+$/ or /^1+0+$/ ) ? 'CLEAN' : 'FAIL'; } __DATA__ 000000 111111 000011111 1111111000 10001001110000011
Output:
000000 : PASS 111111 : PASS 000011111 : CLEAN 1111111000 : CLEAN 10001001110000011 : FAIL

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

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