STK::KeyView< Assoc > Class Template Reference

#include <StkKeyView.h>

Classes
struct	iterator

Public Types
using	key_type = typename Assoc::key_type
using	base_iter = typename Assoc::const_iterator

Public Member Functions
	KeyView (const Assoc &a)
iterator	begin () const
iterator	end () const
std::size_t	size () const
bool	empty () const

Detailed Description

template<class Assoc>
class STK::KeyView< Assoc >

KeyView - Return an iteratable "view" of the keys of an associative container without any copying.

Example:

class MyClass {
public:
   std::map<std::string, int> items;
 
   // Zero-allocation, zero-copy key view
   auto keys() const noexcept { return STK::KeyView(items); }
};
 
...
MyClass c;
c.items["apple"] = 1;
c.items["banana"] = 2;
 
// Iterates "apple", "banana" in map order, with no allocations
for (const auto& k : c.keys()) {
   // use k
}

Template Parameters

Assoc

Associative collection like std::map<K,V,...> or std::unordered_map<...>

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The documentation for this class was generated from the following file:

• Native/SilentToolkit/StkCore/StkKeyView.h