rs-core

Core utilities

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Global Utilities

Core utility library by Ross Smith

#include "rs-core/global.hpp"
namespace RS;

Contents

• Global Utilities
  • Contents
  • Constants
  • Concepts
  • Metaprogramming utilities
  • Range functions

Constants

constexpr std::string_view ascii_whitespace = "\t\n\r ";
constexpr auto npos = ~ 0uz;

Defined for convenience.

Concepts

template <typename R, typename V> concept ReadableRange;
template <typename R, typename V> concept ReadableForwardRange;
template <typename R, typename V> concept ReadableBidirectionalRange;
template <typename R, typename V> concept ReadableRandomAccessRange;
template <typename R, typename V> concept ReadableContiguousRange;
template <typename R, typename V> concept WritableRange;
template <typename R, typename V> concept WritableForwardRange;
template <typename R, typename V> concept WritableBidirectionalRange;
template <typename R, typename V> concept WritableRandomAccessRange;
template <typename R, typename V> concept WritableContiguousRange;
template <typename R, typename V> concept ReadWriteRange
    = ReadableRange<R, V> && WritableRange<R, V>;
template <typename R, typename V> concept ReadWriteForwardRange
    = ReadableForwardRange<R, V> && WritableForwardRange<R, V>;
template <typename R, typename V> concept ReadWriteBidirectionalRange
    = ReadableBidirectionalRange<R, V> && WritableBidirectionalRange<R, V>;
template <typename R, typename V> concept ReadWriteRandomAccessRange
    = ReadableRandomAccessRange<R, V> && WritableRandomAccessRange<R, V>;
template <typename R, typename V> concept ReadWriteContiguousRange
    = ReadableContiguousRange<R, V> && WritableContiguousRange<R, V>;

Range concepts compatible with specific value types. All of these require R to be a range of the appropriate type. ReadableRange also requires a dereferenced iterator to be assignable to a V object; WritableRange also requires a dereferenced iterator to be assignable from a V object.

Metaprogramming utilities

template <typename> constexpr bool dependent_false = false;

Used when the equivalent of static_assert(false) is needed in a dependent context.

Range functions

template <std::input_or_output_iterator I, std::sentinel_for<I> S>
std::ranges::subrange<I, S> as_range(std::pair<I, S> pair) noexcept {
    return std::ranges::subrange(pair.first, pair.second);
}

Turns an iterator pair returned by equal_range() into an actual range.