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iterator/infix: determine container value_type via its iterators

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This commit is contained in:
Danny Robson 2020-01-01 11:08:20 +11:00
parent 8fdb09c95c
commit 8da3cc3293
1 changed files with 6 additions and 1 deletions
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7
iterator/infix.hpp
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@ -74,10 +74,15 @@ namespace cruft::iterator {
std::ostream& std::ostream&
operator<< (std::ostream &os, const infix_t<ContainerT,CharT> &val) operator<< (std::ostream &os, const infix_t<ContainerT,CharT> &val)
{ {
using iterator_type = std::decay_t<
decltype(std::begin (std::declval<ContainerT> ()))
>;
using value_type = typename std::iterator_traits<iterator_type >::value_type;
std::copy ( std::copy (
std::cbegin (val._container), std::cbegin (val._container),
std::cend (val._container), std::cend (val._container),
infix_iterator<typename ContainerT::value_type> (os, val._delimiter) infix_iterator<value_type> (os, val._delimiter)
); );
return os; return os;