Compilation error "expected unqualified-id" when working with templates

Question

For my code

template Signal<float>;
template Signal<bit_t>;
template Signal<byte_t>;
template Signal< std::complex<float> >;
template Signal< int >;

I get compilation errors

error at signal_T.cpp:437: error: expected unqualified-id before â;â token
signal_T.cpp:438: error: expected unqualified-id before â;â token
signal_T.cpp:439: error: expected unqualified-id before â;â token
signal_T.cpp:440: error: expected unqualified-id before â;â token
signal_T.cpp:441: error: expected unqualified-id before â;â token

What does the compiler want to tell me?

How can I fix these errors?

(7 years passed...) I found the answer useful, so edited the question to clarify — anatolyg, Oct 17 '17 at 14:11

score 9 · Answer 1 · answered Feb 01 '10 at 06:39

What is your intent in writing lines such as:

template Signal<float>;

Are you trying to do explicit template instantiation? If so, assuming Signal is a class template, you need to change that to:

// Instantiate Signal with type float
template class Signal<float>;

If you're trying to do something else, please ask a question.

Compilation error "expected unqualified-id" when working with templates

1 Answers1