class SPARQL::Algebra::Operator::Subtract
The SPARQL
numeric `subtract` operator.
(- ?x ?y) (subtract ?x ?y)
Constants
- NAME
Public Instance Methods
apply(left, right, **options)
click to toggle source
Returns the arithmetic difference of the operands.
@param [RDF::Literal::Numeric] left
a numeric literal
@param [RDF::Literal::Numeric] right
a numeric literal
@return [RDF::Literal::Numeric] @raise [TypeError] if either operand is not a numeric literal
# File lib/sparql/algebra/operator/subtract.rb, line 23 def apply(left, right, **options) case when left.is_a?(RDF::Literal::Numeric) && right.is_a?(RDF::Literal::Numeric) left - right else raise TypeError, "expected two RDF::Literal::Numeric operands, but got #{left.inspect} and #{right.inspect}" end end