Attean::Expression - SPARQL Expressions

       Gregory Todd Williams  "<gwilliams@cpan.org>"

       Please   report   any   bugs   or   feature   requests   to   through   the   GitHub   web  interface  at
       <https://github.com/kasei/attean/issues>.

       Copyright (c) 2014--2022 Gregory Todd Williams.  This program is free software; you can  redistribute  it
       and/or modify it under the same terms as Perl itself.

perl v5.40.0                                       2025-01-26                            Attean::Expression(3pm)

       This is a utility package that defines all the Attean SPARQL expression classes consisting of logical,
       numeric, and function operators, constant terms, and variables. Expressions may be evaluated in the
       context of a Attean::API::Result object, and either return a Attean::API::Term object or throw a type
       error exception.

       The expression classes are:

       •   Attean::ValueExpression

       •   Attean::UnaryExpression

       •   Attean::BinaryExpression

       •   Attean::FunctionExpression

       Attean::Expression - SPARQL Expressions

         use v5.14;
         use Attean;

         my $binding = Attean::Result->new();
         my $value = Attean::ValueExpression->new( value => Attean::Literal->integer(2) );
         my $plus = Attean::BinaryExpression->new( children => [$value, $value], operator => '+' );
         my $result = $plus->evaluate($binding);
         say $result->numeric_value; # 4

       This document describes Attean::Expression version 0.035