Perl Functions by Category

       Here are Perl's functions (including things that look like functions, like some keywords and
       named operators) arranged by category.  Some functions appear in more than one place.

       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///"

      <snip>
 
       Functions for real @ARRAYs
           "pop", "push", "shift", "splice", "unshift"

       Functions for list data
           "grep", "join", "map", "qw/STRING/", "reverse", "sort", "unpack"