How do you do old fashion CPP hackery in templates?

[px122000]

Perhaps I am misusing template but I want to write a template that
creates a class and in the class are three functions, <foo>_set,
<foo>_clr, <foo>_tst. So if I invoke the template with a name like
'mask', three methods would be created called mask_set, mask_clr, and
mask_tst. In the old CPP world, you could use ## (or was it just #?).
I don't think I can use that in templates because the CPP pass is
before the compiler.

Thanks

 

[Victor Bazarov]

Perhaps I am misusing template but I want to write a template that
creates a class and in the class are three functions, <foo>_set,
<foo>_clr, <foo>_tst. So if I invoke the template with a name like
'mask', three methods would be created called mask_set, mask_clr, and
mask_tst. In the old CPP world, you could use ## (or was it just #?).
I don't think I can use that in templates because the CPP pass is
before the compiler.

You're correct. This preprocessor trick is still there for you to use,
templates, however, are not meant for that.

V

 

[Lars Tetzlaff]

Perhaps I am misusing template but I want to write a template that
creates a class and in the class are three functions, <foo>_set,
<foo>_clr, <foo>_tst. So if I invoke the template with a name like
'mask', three methods would be created called mask_set, mask_clr, and
mask_tst. In the old CPP world, you could use ## (or was it just #?).
I don't think I can use that in templates because the CPP pass is
before the compiler.

Thanks

Question: why do you want to create functions named like that and not
simply set, clr, tst?
In C you had to do such things because there was no overloading. But do
you need it in C++?

Lars