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Point of view
All features
class PREDICATE [O_ -> TUPLE]
Summary
A PREDICATE is a FUNCTION with a BOOLEAN result type. As in other agent's definitions, O_ represents open arguments (i.e. arguments which are delayed).
Direct parents
Inherit list: FUNCTION
Overview
item alias "()" (o: O_): R_
{ANY}
Result of calling feature with all its operands, using o for the open operands.
alias "()" item (o: O_): R_
{ANY}
Result of calling feature with all its operands, using o for the open operands.
call (o: O_)
{ANY}
For compatibility only.
This feature is obsolete: This feature should not be used: the result is lost.
is_equal (other: PREDICATE [O_ -> TUPLE]): BOOLEAN
{ANY}
Is other attached to an object considered equal to current object?
require
  • other /= Void
ensure
  • commutative: generating_type = other.generating_type implies Result = other.is_equal(Current)