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while (<DATA>) { my ($test, $_) = /^(.+?):\s?([01]+)$/ or do { warn "Line $. is invalid: $_"; next }; ... test 4: 1111111000 test 5:10001001110000011 ..... so on
test 1 000000: PASS test 2 111111: PASS test 3 000011111: CLEAN test 4 1111111000: CLEAN test 5 10001001110000011: FAIL Line 6 is invalid: ..... so on