/perl6-Operator-Listcat

An operator and support tools for concatenating lists in Perl6

Primary LanguagePerl 6MIT LicenseMIT

Operator-Listcat

A module that adds operators and methods for merging lists in a clean way. See:

Perl 6 Needs a List Concatenation Op

From that article:

There are three things here:

  • The infix operator listcat that works as <a b c> listcat <x y z> and returns <a b c x y z> but without flattening any further than one level.
  • The Unicode alias ⊕ for listcat that evokes the Python (among a small number of other languages') convention of using + for this purpose without actually muddying the type waters.
  • A modification to List that adds the sling method that performs a listcat between the List object that it's called on and its arguments, returning the unified list.

Examples

See INSTALL for more detail, But basic installation is:

zef install Operator::Listcat

Some usage:

use Operator::Listcat;

my @a = 1, 2, [3, 4];
my @b = <a b c d>;

say "Together: ", @a listcat @b;

say "Together, but terser: ", @a ⊕ @b;

say "Together with friends: ",
  @a.sling(@b, [8, [9]]);

Licence

This is free software.

Please see the LICENCE for the details.