STL containers header guards.

[tuko]

Hello.

Do you know if there is any standard STL header guard for
vectors, lists, maps e.t.c?

I would like to write code like that

#ifndef STL_VECTOR_
#error "please include stl vector"
#endif
std::vector<double> foo;

I am searching an elegant way to prevent a flood of
compilation errors.

Many thanks.

Tuko

 

[John Harrison]

Hello.

Do you know if there is any standard STL header guard for
vectors, lists, maps e.t.c?
No


I would like to write code like that

#ifndef STL_VECTOR_
#error "please include stl vector"
#endif
std::vector<double> foo;

I am searching an elegant way to prevent a flood of
compilation errors.

Why not the obvious way?

#include <vector>
std::vector<double> foo;

Every header file should include the header files needed for it to compile.

john

 

[Chris Gordon-Smith]

Hello.

Do you know if there is any standard STL header guard for
vectors, lists, maps e.t.c?

I would like to write code like that

#ifndef STL_VECTOR_
#error "please include stl vector"
#endif
std::vector<double> foo;

I am searching an elegant way to prevent a flood of
compilation errors.

Many thanks.

Tuko

If you were going to write an #ifndef line like the one shown above, then
you might just as well include the correct header in the first place.

If you really want to avoid a flood of errors, then you could always include
a file called 'library_headers.h' which itself includes all of the STL
headers that you use.

I doubt whether this is generally considered good style. Some of my code
that was originally written for C++ Builder does it, because its necessary
in order to get pre-compiled headers to work.