Function Objects

A function object is simply an object that is treated as a function. More...

Classes
protocol	< OLBinaryFunction >
	A protocol defining the message for performing the operation of a binary function object. More...
class	OLBinaryNegate
	A binary function object that negates the action of another binary function object. More...
class	OLBinder1st
	Transform a binary function object into a unary function object. More...
class	OLBinder2nd
	Transform a binary function object into a unary function object. More...
protocol	< OLBoolBinaryFunction >
	A protocol defining the message for performing the operation of a binary function object. More...
class	OLBoolBinder1st
	Transform a binary function object into a unary function object. More...
class	OLBoolBinder2nd
	Transform a binary function object into a unary function object. More...
protocol	< OLBoolUnaryFunction >
	A protocol defining the message for performing the operation of a unary function object. More...
class	OLDivides
	A function object for performing division. More...
class	OLEqualTo
	A function object for assessing equality. More...
class	OLFunctor
	A base class for function objects. More...
class	OLGreater
	A function object for comparing objects. More...
class	OLGreaterEqual
	A function object for comparing objects. More...
class	OLLess
	A function object for comparing objects. More...
class	OLLessEqual
	A function object for comparing objects. More...
class	OLLogicalAnd
	A function object that tests whether two object are both true. More...
class	OLLogicalNot
	A function object is true only if its argument is false. More...
class	OLLogicalOr
	A function object that tests whether either of two object is true. More...
class	OLMemFun
	A function object that sends a given message to a given object and returns the result. More...
class	OLMemFun1
	A function object that sends a given message and a given argument to a given object and returns the result. More...
class	OLMinus
	A function object that subtracts the value of one object from the value of another. More...
class	OLModulus
	Compute the remainder of division. More...
class	OLMultiplies
	A function object that multiplies the value of one object by the value of another. More...
class	OLNegate
	A function object for reversing the sign of the value of a given object. More...
class	OLNotEqualTo
	A function object for assessing inequality. More...
class	OLPlus
	A function object for adding the values of two objects. More...
class	OLStreamableFunctor
	A function object that can be encoded to and decoded from an archive. More...
protocol	< OLUnaryFunction >
	A protocol defining the message for performing the operation of a unary function object. More...
class	OLUnaryNegate
	A unary function object that negates the action of another unary function object. More...

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Detailed Description

A function object is simply an object that is treated as a function.

There are two types of function objects used in ObjectiveLib: unary function objects and binary function objects. Unary function objects take a single object as a parameter and return a result, and binary function objects take two objects as parameters and return a result. They are used extensively for example to define how a sorted container is sorted. In this case a binary function object is used to compare two objects in the controlled sequence to determine sorting order.

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Generated Sun Apr 22 15:12:45 2007, © 2004-2007 Will Mason