Polymorphism...

[Kamikaze_Badger]

Is there any easy way to grasp the concept and usage of polymorphism? I understand that it's uber powerful and all (and uber evil), but there are very few guides on it, and the ones that are there tend to be confusing.

 

 

So, does anyone know any tutorials or anything that introduce polymorphism and actually explain it and all? Or, can someone describe it in a nutshell?

 

 

 

This stuff is more evil than WinSocks...

 

 

EDIT: So, no-one wants to help? Oh markie, where art thou?

[markiemrboo]

Is there any easy way to grasp the concept and usage of polymorphism? I understand that it's uber powerful and all (and uber evil), but there are very few guides on it, and the ones that are there tend to be confusing.

So, does anyone know any tutorials or anything that introduce polymorphism and actually explain it and all? Or, can someone describe it in a nutshell?

This stuff is more evil than WinSocks...

EDIT: So, no-one wants to help? Oh markie, where art thou?

510193[/snapback]

 

Sleeping 'twas a great sleep too. Actually managed to fall asleep before 1AM I think!

 

I expect you're wanting polymorphism in C++? I learnt about it in......... Java It is a difficult thing to explain...

 

I'll uhm... work up some code(?), find tutorials and stuff for you later on. In the mean time you could practice pointers, because you'll be needing them Maybe play with structures too?

[Kamikaze_Badger]

So knowing how to use a pointer to point to data within a structure element isn't enough?

[markiemrboo]

Possibly Pointers to structures if you dont know about those... and perhaps try pointers to pointers to see if you properly understand pointers yet

[Silverfox]

aww man....polymorphism.....i remember learning that.....and promptly forgetting about it.

 

if i can find my old computing book, i'll reply with an explanation

 

man...you do pick 'em KB....

[Kamikaze_Badger]

You mean a simple int* pPointerToPointer = &pOtherPointer won't work?

[markiemrboo]

You mean a simple int* pPointerToPointer = &pOtherPointer won't work?

510533[/snapback]

 

close..

 

int i = 123;
int *p = &i;
int **pp = &p;

printf("pp at memory address %x\n", &pp);
printf("pp points to %x\n", pp);
printf("pp pointer points to %x\n", *pp);
printf("pp value %d\n", *(*pp));
printf("\n");
printf("p at memory address %x\n", &p);
printf("p points to %x\n", p);
printf("p value %d\n", *p);

 

pp at memory address 22ff34

pp points to 22ff38

pp pointer points to 22ff44

pp value 123

 

p at memory address 22ff38

p points to 22ff44

p value 123

Press any key to continue . . .

[Kamikaze_Badger]

Ahhh... so I needed that extra *...

 

 

Yes, I'm tired. danged Harry Potter book release...

[Archerzz]

is the book any good?

[Kamikaze_Badger]

I don't know, havn't read it yet. D@MNED SIBLINGS!

[Archerzz]

lol beat them up

[Kamikaze_Badger]

I would if I weren't madly in love with my new mate .