class templates in header files

[Blessman11]

Do class templates only work in c.pp files? My VC++2010, underlines header files declared in header files, this is just strange.

[hamsterman]

No. There is no such restriction. In fact you should keep all your templates (including their definitions) in headers.
This might be a bug in VC++. If there are compiler errors, post your code.

[Blessman11]

I can'tn declare vectors in my headerfile, thats my issue

[Blessman11]

it says "vector is not a valid template", the text below it is underlined (its VC2010 tells its an error)

[Blessman11]

in my project, vectors can only be declared in the "main.cpp". This seems to be very strange behavior indeed. Does anybody have an explanation?

I'm guessing this might have happen to other people

[Computergeek01]

Are you writing std::vector<datatype> varName;? Are you making sure to include #include <vector> at the top of your code? Do you have an "#ifdef" or "#ifndef" that is preventing anypart of the declaration from executing?

[hamsterman]

If there are compiler errors, post your code.

[Moschops]

Before your compiler gets a look in, the preprocessor takes the contents of every file you include with a #include, and dumps it wholesale into the file in which you include it (i.e. into your cpp file).