NAME

Data::Annotation::Expression::Builtin

SYNOPSIS

use Data::Annotation::Expression::Builtin;

DESCRIPTION

This module is not supposed to be used alone. It provides default built-ins for Data::Annotation::Expression:

• numeric comparison operators (same as Perl)

• string comparison operators (same as Perl)

• boolean operators and, or, not, and xor. Note that both and and or always evaluate all their operands, mostly because the evaluation happens before the functions are called.

• regular expression functions:

  • match/=~

  • unmatch/!~

• set operations, applied to lists (array references) that are anyway cleaned up of duplicates:

  • union/U/⋃

  • intersection/⋂

  • less (binary, the second set is subtracted from the first)

  • symmetric_difference

  • is_superset_of/⊇

  • is_subset_of/⊆

  • is_element_of/∈

  • contains/∋

  • sets_are_same

  • set_size

  • set_is_empty

• miscellaneous:

  • array makes sure that something is an array, turning undef into an empty array and a lonely scalar into array with that scalar inside.

  • trim removes blank chars from the beginning and end of a string.

ANYTHING ELSE (INCLUDING AUTHOR, COPYRIGHT AND LICENSE)

See documentation for Data::Annotation.