built-in functions - a partial list
Functions for SCALARs or strings
- chomp, chop, chr, crypt, hex, index, lc, lcfirst, length, oct, ord, pack, q/STRING/, qq/STRING/, reverse, rindex, sprintf, substr, tr///, uc, ucfirst, y///
Regular expressions and pattern matching
- m//, pos, quotemeta, s///, split, study, qr//
Numeric functions
- abs, atan2, cos, exp, hex, int, log, oct, rand, sin, sqrt, srand
Functions for real @ARRAYs
- pop, push, shift, splice, unshift
Functions for list data
- grep, join, map, qw/STRING/, reverse, sort, unpack
Functions for real %HASHes
- delete, each, exists, keys, values
Functions for fixed length data or records
- pack, read, syscall, sysread, syswrite, unpack, vec