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// Range v3 library
//
// Copyright Eric Niebler 2013-present
//
// Use, modification and distribution is subject to the
// Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#include <range/v3/all.hpp>
#include <iostream>
using namespace ranges;
// A range that iterates over all the characters in a
// null-terminated string.
class c_string_range
: public view_facade<c_string_range>
{
friend range_access;
char const * sz_;
char const & read() const { return *sz_; }
bool equal(default_sentinel_t) const { return *sz_ == '\0'; }
void next() { ++sz_; }
public:
c_string_range() = default;
explicit c_string_range(char const *sz) : sz_(sz)
{
assert(sz != nullptr);
}
};
int main()
{
c_string_range r("hello world");
// Iterate over all the characters and print them out
ranges::for_each(r, [](char ch){
std::cout << ch << ' ';
});
// prints: h e l l o w o r l d
}
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