From:	Fabrice ILPONSE <fabrice AT asim DOT lip6 DOT fr>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: help - template<class T>
Date:	Mon, 07 Sep 1998 13:37:29 +0200
Organization:	Universites Paris VI/Paris VII - France
Lines:	39
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References:	<35f10110 DOT 1073722 AT news DOT telepac DOT pt> <35F14F9C DOT 8570B044 AT unb DOT ca>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Endlisnis wrote:
> 
> Jorge Bruno S. S. Morgado wrote:

>         I think it has to do with the way templates are handled.  math.o is small
> because there is (effectively) nothing in it.  Templates are only compiled
> when a reference to them if found.  No references are found in math.cc.  I
> don't think the linker will link templated functions that had no instances
> during compilation.


	I'm not sure!!
	You have to put all the class in the header.
	The functions are  recreated each time you declare a new template
variable of an inexisting type.

	eg.
		matrix <int> a,b;
		matrix <float> c;

	in fact there'll be 2 differents classes: 1 for int and 1 for float.
	So as the compiler need to know the body of the functions to rebuild
them, they must be in the header file.

Bye!
> --
>      (\/) Endlisnis (\/)
>           s257m AT unb DOT ca
>           Endlisnis AT GeoCities DOT com
>           Endlis AT nbnet DOT nb DOT ca

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	+-+-+	Fabrice ILPONSE
	  |	email: fabrice AT asim DOT lip6 DOT fr
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