I have a templated class P that has a const_iterator and i'm trying to make a vector of said iterators and iterate through that vector:
std::vector<typename P<A, B>::const_iterator>::const_iterator it;
problem is when i try to compile i get
error: expected ‘;’ before ‘it’
any ideas as to why this is happening?
你需要一个typename
之前std::vector<>
以及因为在模板参数中的至少一个P<A, B>
是一个依赖型:
typename std::vector<typename P<A, B>::const_iterator>::const_iterator it;
Both uses of const_iterator
depend on template parameters; so both need typename
.
typename std::vector<typename P<A, B>::const_iterator>::const_iterator it;
^^^^^^^^ ^^^^^^^^
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