Please take note of the updates at the end of this post.
Update: I have created a public project on GitHub for this library!
I would like to have a single template that once and for all takes care of pretty-printing all STL containers via operator<<. In pseudo code, I'm looking for something like this:
template<container C, class T, String delim = ", ", String open = "[", String close = "]">
std::ostream & operator<<(std::ostream & o, const C<T> …根据这个答案,<<为C风格数组重载输出操作符的正确方法是这样的 - :
#include <iostream>
using namespace std;
template <size_t arrSize>
std::ostream& operator<<( std::ostream& out, const char( &arr )[arrSize] )
{
return out << static_cast<const char*>( arr ); // use the original version
}
// Print an array
template<typename T1, size_t arrSize>
std::ostream& operator <<( std::ostream& out, const T1( & arr )[arrSize] )
{
out << "[";
if ( arrSize )
{
const char* separator = "";
for ( const auto& element : arr )
{ …