in reply to Regex: If not beginning of string match end
The first test rejects all data that fit the ^[s][0|6]00[0-9]{2} pattern.use Modern::Perl; while (<DATA>) { chomp; next if /^[s][0|6]00[0-9]{2}/; next unless /(\d{2})$/; say "$_ -> $1"; } __DATA__ s00023 s50012 s600ad s00012 abc-def-123456
The second test rejects all data that does not end in two digits.
If the data "survives" both tests it gets printed.
s50012 -> 12 abc-def-123456 -> 56
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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