This population method allows the user to specify the regular expression as a data generator.

Regular Expressions

• The program supports standard UNIX-style regular expressions except items mentioned in 'Limitations' section.
• \d means digit
• \w means letter digit or '_'
• \s means space symbols
• Repeaters: {n} means exact n times, {n,m} means between n and m times

Limitations

• The program ignores '$' and '^' signs for begin and end.
• The generator does not support negative ranges like [^0-9].
• Only \1 to \9 blocks can be used.

Pattern Engine

$Regexp function of the engine provides the user with the same functionality.