C++ template parse error

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Where and why do I have to put the “template” and “typename” keywords?

I have a static template method test in class A which takes a single bool template parameter. When I try to call the function like this:

x = A::test<true>(...);

The parser complains as it treats the < as the less than operator. How can I tell the compiler that this is a template instanciation rather than a less than oprator?

score 5 · Accepted Answer · edited May 23 '17 at 12:27

5

A::template test<true>(...);

read Where and why do I have to put the "template" and "typename" keywords?

edited May 23 '17 at 12:27

Community

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answered Jan 31 '13 at 12:13

ForEveR

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That should only be needed if `A` is a template parameter (or a dependent type of that). – Xeo Jan 31 '13 at 12:27

score 2 · Answer 2 · answered Jan 31 '13 at 12:13

2

The template keyword removes the ambiguity.

x = A::template test<true>(...);

answered Jan 31 '13 at 12:13

eduffy

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C++ template parse error

2 Answers2