ModN Class Reference

List of all members.

Public Member Functions
	ModN (int mod, int value=0)
ModN &	operator++ ()
ModN &	operator-- ()
bool	operator== (const ModN &operand) const
	operator int () const
bool	completed ()
Private Attributes
int	fMod
int	fValue
bool	fCompleted

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Detailed Description

© Bernhard Wagner, 2003.

Models a "mod n set" (see e.g., John K. Truss "Discrete Mathematics for Computer Scientists", p.7)

Definition at line 24 of file Life001.cpp.

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Constructor & Destructor Documentation

ModN::ModN	(	int	mod,
		int	value = 0
	)			[inline]

Parameters:

	mod	The mod of the set
	value	The value of the variable

Definition at line 31 of file Life001.cpp.

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Member Function Documentation

ModN& ModN::operator++

(

)

[inline]

Asserts maintenance of affiliation to the set, i.e. "wraps around" Side effect: Updates inner state of completed which is used for iteration.

Definition at line 37 of file Life001.cpp.

References fCompleted, fMod, and fValue.

ModN& ModN::operator--

(

)

[inline]

Asserts maintenance of affiliation to the set, i.e. "wraps around" Side effect: Updates inner state of completed which is used for iteration.

Definition at line 48 of file Life001.cpp.

References fCompleted, fMod, and fValue.

bool ModN::operator==

(

const ModN &

operand

)

const [inline]

We compare mod and the value. FIXME: Probably should throw exception if mods are not the same.

Definition at line 58 of file Life001.cpp.

References fMod, and fValue.

ModN::operator int

(

)

const [inline]

As a convenience so ModN can be used directly within integer algebraic expressions. There is a danger though, since comparisons might lead to confusing results e.g.

 ModN mod34(4,3) int i = 4; mod43 == i; // ok, false, mod43 is 3, let's increment...
 mod43++; mod43 == i; // oops, false too, because of wrap around, i.e. mod43 now is 0!
 

Definition at line 68 of file Life001.cpp.

References fValue.

bool ModN::completed

(

)

[inline]

Simulates iterator behaviour. Is set to true if the last increment or decrement lead to wraparound. FIXME: better introduce iterators! This class actually is an iterator.

Returns:

True if the last increment or decrement lead to wraparound.

Definition at line 77 of file Life001.cpp.

References fCompleted.

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Member Data Documentation

int ModN::fMod [private]

Definition at line 79 of file Life001.cpp.

Referenced by operator++(), operator--(), and operator==().

int ModN::fValue [private]

Definition at line 80 of file Life001.cpp.

Referenced by operator int(), operator++(), operator--(), and operator==().

bool ModN::fCompleted [private]

Definition at line 81 of file Life001.cpp.

Referenced by completed(), operator++(), and operator--().

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The documentation for this class was generated from the following file:

• Life001.cpp

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