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types: add elems implementation for container types

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This commit is contained in:
Danny Robson 2015-10-06 15:20:51 +11:00
parent f7a1ead518
commit e12edc6c0a
1 changed files with 8 additions and 1 deletions
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9
types.hpp
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@ -25,10 +25,17 @@
//-----------------------------------------------------------------------------
/// Returns the number of elements of a statically allocated array
template <typename T, size_t N>
constexpr size_t elems(const T (&)[N])
constexpr size_t
elems (const T (&)[N])
{ return N; }
template <typename T>
constexpr typename T::size_type
elems (const T &t)
{ return t.size (); }
//-----------------------------------------------------------------------------
template <class T>
T