nerdcruft/libcruft-util
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view: add redim operation

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Danny Robson 2017-08-31 13:03:19 +10:00
parent a9f8594b26
commit 367fc1dcb1
1 changed files with 9 additions and 0 deletions
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9
view.hpp
View File

@ -24,6 +24,7 @@
#include <ostream> #include <ostream>
#include <string> #include <string>
#include <cstring> #include <cstring>
#include <stdexcept>
namespace util { namespace util {
template <typename T> template <typename T>
@ -75,6 +76,14 @@ namespace util {
return std::distance (m_begin, m_end); return std::distance (m_begin, m_end);
} }
constexpr auto
redim (int count) const noexcept
{
if (count > size ())
throw std::invalid_argument ("redim to higher size not allowed");
return view { m_begin, m_begin + count };
};
constexpr value_type& constexpr value_type&
operator[] (size_t idx) noexcept operator[] (size_t idx) noexcept
{ {