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Contents
# encoding: utf-8
module Veritas
class Function
class Predicate
# A predicate representing an inclusion test
class Inclusion < Predicate
include Enumerable
# Test an enumerable to see if a value is included
#
# @example
# Inclusion.call(1, [ 1, 2, 3 ]) # => true
#
# @param [Object] left
# the object to test for in the Enumerable
# @param [Enumerable] right
# the enumerable to test
#
# @return [Boolean]
#
# @api public
def self.call(left, right)
right.send(Enumerable.compare_method(right), left)
end
# Return the inverse predicate class
#
# @example
# Inclusion.inverse # => Exclusion
#
# @return [Class<Exclusion>]
#
# @api public
def self.inverse
Exclusion
end
# Return a string representing the predicate
#
# @example
# inclusion.inspect # => "<Attribute::Integer name: id> ∈ [1, 2, 3]"
#
# @return [String]
#
# @api public
def inspect
"(#{left.inspect} ∈ #{right.inspect})"
end
module Methods
# Compare the left to see if it is included in the right
#
# @example
# inclusion = attribute.include([ 1, 2, 3 ])
#
# @param [Function] other
#
# @return [Inclusion]
#
# @api public
def include(other)
Inclusion.new(self, other)
end
end # module Methods
end # class Inclusion
end # class Predicate
end # class Function
end # module Veritas
Version data entries
4 entries across 4 versions & 1 rubygems