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