FM / fwd

/usr/include/boost/hana/fwd

Name	Size	Mode	Actions
concept/	-	0755	rm
core/	-	0755	rm
accessors.hpp	1519	0644	edit dl rm
adapt_adt.hpp	1596	0644	edit dl rm
adapt_struct.hpp	1586	0644	edit dl rm
adjust.hpp	1787	0644	edit dl rm
adjust_if.hpp	2275	0644	edit dl rm
all.hpp	1185	0644	edit dl rm
all_of.hpp	1476	0644	edit dl rm
and.hpp	1441	0644	edit dl rm
any.hpp	1178	0644	edit dl rm
any_of.hpp	1445	0644	edit dl rm
ap.hpp	2649	0644	edit dl rm
append.hpp	2044	0644	edit dl rm
at.hpp	2824	0644	edit dl rm
at_key.hpp	2334	0644	edit dl rm
back.hpp	1355	0644	edit dl rm
basic_tuple.hpp	2292	0644	edit dl rm
bool.hpp	384	0644	edit dl rm
cartesian_product.hpp	1837	0644	edit dl rm
chain.hpp	1964	0644	edit dl rm
comparing.hpp	1924	0644	edit dl rm
concat.hpp	1838	0644	edit dl rm
contains.hpp	2378	0644	edit dl rm
core.hpp	619	0644	edit dl rm
count.hpp	1683	0644	edit dl rm
count_if.hpp	1634	0644	edit dl rm
cycle.hpp	2460	0644	edit dl rm
define_struct.hpp	1582	0644	edit dl rm
difference.hpp	854	0644	edit dl rm
div.hpp	1772	0644	edit dl rm
drop_back.hpp	2016	0644	edit dl rm
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drop_front_exactly.hpp	2409	0644	edit dl rm
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duplicate.hpp	1574	0644	edit dl rm
empty.hpp	1306	0644	edit dl rm
equal.hpp	2584	0644	edit dl rm
erase_key.hpp	876	0644	edit dl rm
eval.hpp	2012	0644	edit dl rm
eval_if.hpp	6453	0644	edit dl rm
extend.hpp	1733	0644	edit dl rm
extract.hpp	1547	0644	edit dl rm
fill.hpp	1412	0644	edit dl rm
filter.hpp	2600	0644	edit dl rm
find.hpp	1778	0644	edit dl rm
find_if.hpp	1734	0644	edit dl rm
first.hpp	1470	0644	edit dl rm
flatten.hpp	1727	0644	edit dl rm
fold.hpp	1066	0644	edit dl rm
fold_left.hpp	3004	0644	edit dl rm
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for_each.hpp	1513	0644	edit dl rm
front.hpp	1401	0644	edit dl rm
fuse.hpp	1580	0644	edit dl rm
greater.hpp	1464	0644	edit dl rm
greater_equal.hpp	1563	0644	edit dl rm
group.hpp	3872	0644	edit dl rm
hash.hpp	2158	0644	edit dl rm
if.hpp	1651	0644	edit dl rm
index_if.hpp	1846	0644	edit dl rm
insert.hpp	1695	0644	edit dl rm
insert_range.hpp	1778	0644	edit dl rm
integral_constant.hpp	4791	0644	edit dl rm
intersection.hpp	872	0644	edit dl rm
intersperse.hpp	1780	0644	edit dl rm
is_disjoint.hpp	1445	0644	edit dl rm
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is_subset.hpp	2800	0644	edit dl rm
keys.hpp	1338	0644	edit dl rm
lazy.hpp	4593	0644	edit dl rm
length.hpp	1415	0644	edit dl rm
less.hpp	1394	0644	edit dl rm
less_equal.hpp	1493	0644	edit dl rm
lexicographical_compare.hpp	3819	0644	edit dl rm
lift.hpp	1686	0644	edit dl rm
map.hpp	13142	0644	edit dl rm
max.hpp	1150	0644	edit dl rm
maximum.hpp	4344	0644	edit dl rm
members.hpp	1256	0644	edit dl rm
min.hpp	1525	0644	edit dl rm
minimum.hpp	4334	0644	edit dl rm
minus.hpp	2101	0644	edit dl rm
mod.hpp	1970	0644	edit dl rm
monadic_compose.hpp	2296	0644	edit dl rm
monadic_fold_left.hpp	4016	0644	edit dl rm
monadic_fold_right.hpp	4174	0644	edit dl rm
mult.hpp	1933	0644	edit dl rm
negate.hpp	1022	0644	edit dl rm
none.hpp	1217	0644	edit dl rm
none_of.hpp	1498	0644	edit dl rm
not.hpp	1220	0644	edit dl rm
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one.hpp	1116	0644	edit dl rm
optional.hpp	18788	0644	edit dl rm
or.hpp	1426	0644	edit dl rm
ordering.hpp	1902	0644	edit dl rm
pair.hpp	5768	0644	edit dl rm
partition.hpp	2731	0644	edit dl rm
permutations.hpp	1563	0644	edit dl rm
plus.hpp	1944	0644	edit dl rm
power.hpp	1560	0644	edit dl rm
prefix.hpp	2097	0644	edit dl rm
prepend.hpp	2415	0644	edit dl rm
product.hpp	2636	0644	edit dl rm
range.hpp	5480	0644	edit dl rm
remove.hpp	2177	0644	edit dl rm
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repeat.hpp	1624	0644	edit dl rm
replace.hpp	1842	0644	edit dl rm
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replicate.hpp	2511	0644	edit dl rm
reverse.hpp	1187	0644	edit dl rm
reverse_fold.hpp	2886	0644	edit dl rm
scan_left.hpp	3712	0644	edit dl rm
scan_right.hpp	3811	0644	edit dl rm
second.hpp	1477	0644	edit dl rm
set.hpp	9981	0644	edit dl rm
size.hpp	929	0644	edit dl rm
slice.hpp	3524	0644	edit dl rm
sort.hpp	3770	0644	edit dl rm
span.hpp	2858	0644	edit dl rm
string.hpp	10794	0644	edit dl rm
suffix.hpp	2081	0644	edit dl rm
sum.hpp	3253	0644	edit dl rm
symmetric_difference.hpp	944	0644	edit dl rm
take_back.hpp	2178	0644	edit dl rm
take_front.hpp	2231	0644	edit dl rm
take_while.hpp	1692	0644	edit dl rm
tap.hpp	2183	0644	edit dl rm
then.hpp	1420	0644	edit dl rm
transform.hpp	1467	0644	edit dl rm
tuple.hpp	8554	0644	edit dl rm
type.hpp	19848	0644	edit dl rm
unfold_left.hpp	2546	0644	edit dl rm
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union.hpp	811	0644	edit dl rm
unique.hpp	3337	0644	edit dl rm
unpack.hpp	3560	0644	edit dl rm
value.hpp	3159	0644	edit dl rm
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zero.hpp	1095	0644	edit dl rm
zip.hpp	1918	0644	edit dl rm
zip_shortest.hpp	2039	0644	edit dl rm
zip_shortest_with.hpp	2163	0644	edit dl rm
zip_with.hpp	2042	0644	edit dl rm

Edit: /usr/include/boost/hana/fwd/string.hpp (10794B)

/*!
@file
Forward declares `boost::hana::string`.

@copyright Louis Dionne 2013-2017
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
 */

#ifndef BOOST_HANA_FWD_STRING_HPP
#define BOOST_HANA_FWD_STRING_HPP

#include <boost/hana/config.hpp>
#include <boost/hana/fwd/core/make.hpp>
#include <boost/hana/fwd/core/to.hpp>

BOOST_HANA_NAMESPACE_BEGIN
#ifdef BOOST_HANA_DOXYGEN_INVOKED
    //! @ingroup group-datatypes
    //! Compile-time string.
    //!
    //! Conceptually, a `hana::string` is like a tuple holding
    //! `integral_constant`s of underlying type `char`. However, the
    //! interface of `hana::string` is not as rich as that of a tuple,
    //! because a string can only hold compile-time characters as opposed
    //! to any kind of object.
    //!
    //! Compile-time strings are used for simple purposes like being keys in a
    //! `hana::map` or tagging the members of a `Struct`. However, you might
    //! find that `hana::string` does not provide enough functionality to be
    //! used as a full-blown compile-time string implementation (e.g. regexp
    //! matching or substring finding). Indeed, providing a comprehensive
    //! string interface is a lot of job, and it is out of the scope of the
    //! library for the time being.
    //!
    //!
    //! @note
    //! The representation of `hana::string` is implementation-defined.
    //! In particular, one should not take for granted that the template
    //! parameters are `char`s. The proper way to access the contents of
    //! a `hana::string` as character constants is to use `hana::unpack`,
    //! `.c_str()` or `hana::to<char const*>`, as documented below. More
    //! details [in the tutorial](@ref tutorial-containers-types).
    //!
    //!
    //! Modeled concepts
    //! ----------------
    //! For most purposes, a `hana::string` is functionally equivalent to a
    //! tuple holding `Constant`s of underlying type `char`.
    //!
    //! 1. `Comparable`\n
    //! Two strings are equal if and only if they have the same number of
    //! characters and characters at corresponding indices are equal.
    //! @include example/string/comparable.cpp
    //!
    //! 2. `Orderable`\n
    //! The total order implemented for `Orderable` is the usual
    //! lexicographical comparison of strings.
    //! @include example/string/orderable.cpp
    //!
    //! 3. `Monoid`\n
    //! Strings form a monoid under concatenation, with the neutral element
    //! being the empty string.
    //! @include example/string/monoid.cpp
    //!
    //! 4. `Foldable`\n
    //! Folding a string is equivalent to folding the sequence of its
    //! characters.
    //! @include example/string/foldable.cpp
    //!
    //! 5. `Iterable`\n
    //! Iterating over a string is equivalent to iterating over the sequence
    //! of its characters. Also note that `operator[]` can be used instead of
    //! the `at` function.
    //! @include example/string/iterable.cpp
    //!
    //! 6. `Searchable`\n
    //! Searching through a string is equivalent to searching through the
    //! sequence of its characters.
    //! @include example/string/searchable.cpp
    //!
    //! 7. `Hashable`\n
    //! The hash of a compile-time string is a type uniquely representing
    //! that string.
    //! @include example/string/hashable.cpp
    //!
    //!
    //! Conversion to `char const*`
    //! ---------------------------
    //! A `hana::string` can be converted to a `constexpr` null-delimited
    //! string of type `char const*` by using the `c_str()` method or
    //! `hana::to<char const*>`. This makes it easy to turn a compile-time
    //! string into a runtime string. However, note that this conversion is
    //! not an embedding, because `char const*` does not model the same
    //! concepts as `hana::string` does.
    //! @include example/string/to.cpp
    //!
    //! Conversion from any Constant holding a `char const*`
    //! ----------------------------------------------------
    //! A `hana::string` can be created from any `Constant` whose underlying
    //! value is convertible to a `char const*` by using `hana::to`. The
    //! contents of the `char const*` are used to build the content of the
    //! `hana::string`.
    //! @include example/string/from_c_str.cpp
    //!
    //! Rationale for `hana::string` not being a `Constant` itself
    //! ----------------------------------------------------------
    //! The underlying type held by a `hana::string` could be either `char const*`
    //! or some other constexpr-enabled string-like container. In the first case,
    //! `hana::string` can not be a `Constant` because the models of several
    //! concepts would not be respected by the underlying type, causing `value`
    //! not to be structure-preserving. Providing an underlying value of
    //! constexpr-enabled string-like container type like `std::string_view`
    //! would be great, but that's a bit complicated for the time being.
    template <typename implementation_defined>
    struct string {
        // Default-construct a `hana::string`; no-op since `hana::string` is stateless.
        constexpr string() = default;

// Copy-construct a `hana::string`; no-op since `hana::string` is stateless.
        constexpr string(string const&) = default;

//! Equivalent to `hana::equal`
        template <typename X, typename Y>
        friend constexpr auto operator==(X&& x, Y&& y);

//! Equivalent to `hana::not_equal`
        template <typename X, typename Y>
        friend constexpr auto operator!=(X&& x, Y&& y);

//! Equivalent to `hana::less`
        template <typename X, typename Y>
        friend constexpr auto operator<(X&& x, Y&& y);

//! Equivalent to `hana::greater`
        template <typename X, typename Y>
        friend constexpr auto operator>(X&& x, Y&& y);

//! Equivalent to `hana::less_equal`
        template <typename X, typename Y>
        friend constexpr auto operator<=(X&& x, Y&& y);

//! Equivalent to `hana::greater_equal`
        template <typename X, typename Y>
        friend constexpr auto operator>=(X&& x, Y&& y);

//! Performs concatenation; equivalent to `hana::plus`
        template <typename X, typename Y>
        friend constexpr auto operator+(X&& x, Y&& y);

//! Equivalent to `hana::at`
        template <typename N>
        constexpr decltype(auto) operator[](N&& n);

//! Returns a null-delimited C-style string.
        static constexpr char const* c_str();
    };
#else
    template <char ...s>
    struct string;
#endif

//! Tag representing a compile-time string.
    //! @relates hana::string
    struct string_tag { };

#ifdef BOOST_HANA_DOXYGEN_INVOKED
    //! Create a compile-time `hana::string` from a parameter pack of `char`
    //! `integral_constant`s.
    //! @relates hana::string
    //!
    //! Given zero or more `integral_constant`s of underlying type `char`,
    //! `make<string_tag>` creates a `hana::string` containing those characters.
    //! This is provided mostly for consistency with the rest of the library,
    //! as `hana::string_c` is more convenient to use in most cases.
    //!
    //!
    //! Example
    //! -------
    //! @include example/string/make.cpp
    template <>
    constexpr auto make<string_tag> = [](auto&& ...chars) {
        return string<implementation_defined>{};
    };
#endif

//! Alias to `make<string_tag>`; provided for convenience.
    //! @relates hana::string
    constexpr auto make_string = make<string_tag>;

//! Equivalent to `to<string_tag>`; provided for convenience.
    //! @relates hana::string
    constexpr auto to_string = to<string_tag>;

//! Create a compile-time string from a parameter pack of characters.
    //! @relates hana::string
    //!
    //!
    //! Example
    //! -------
    //! @include example/string/string_c.cpp
#ifdef BOOST_HANA_DOXYGEN_INVOKED
    template <char ...s>
    constexpr string<implementation_defined> string_c{};
#else
    template <char ...s>
    constexpr string<s...> string_c{};
#endif

//! Create a compile-time string from a string literal.
    //! @relates hana::string
    //!
    //! This macro is a more convenient alternative to `string_c` for creating
    //! compile-time strings. However, since this macro uses a lambda
    //! internally, it can't be used in an unevaluated context, or where
    //! a constant expression is expected before C++17.
    //!
    //!
    //! Example
    //! -------
    //! @include example/string/macro.cpp
#ifdef BOOST_HANA_DOXYGEN_INVOKED
    auto BOOST_HANA_STRING(s) = see documentation;
    #define BOOST_HANA_STRING(s) see documentation

// Note:
    // The trick above seems to exploit a bug in Doxygen, which makes the
    // BOOST_HANA_STRING macro appear in the related objects of hana::string
    // (as we want it to).
#else
    // defined in <boost/hana/string.hpp>
#endif

#ifdef BOOST_HANA_CONFIG_ENABLE_STRING_UDL
    namespace literals {
        //! Creates a compile-time string from a string literal.
        //! @relatesalso boost::hana::string
        //!
        //! The string literal is parsed at compile-time and the result is
        //! returned as a `hana::string`. This feature is an extension that
        //! is disabled by default; see below for details.
        //!
        //! @note
        //! Only narrow string literals are supported right now; support for
        //! fancier types of string literals like wide or UTF-XX might be
        //! added in the future if there is a demand for it. See [this issue]
        //! [Hana.issue80] if you need this.
        //!
        //! @warning
        //! This user-defined literal is an extension which requires a special
        //! string literal operator that is not part of the standard yet.
        //! That operator is supported by both Clang and GCC, and several
        //! proposals were made for it to enter C++17. However, since it is
        //! not standard, it is disabled by default and defining the
        //! `BOOST_HANA_CONFIG_ENABLE_STRING_UDL` config macro is required
        //! to get this operator. Hence, if you want to stay safe, just use
        //! the `BOOST_HANA_STRING` macro instead. If you want to be fast and
        //! furious (I do), define `BOOST_HANA_CONFIG_ENABLE_STRING_UDL`.
        //!
        //!
        //! Example
        //! -------
        //! @include example/string/literal.cpp
        //!
        //! [Hana.issue80]: https://github.com/boostorg/hana/issues/80
        template <typename CharT, CharT ...s>
        constexpr auto operator"" _s();
    }
#endif
BOOST_HANA_NAMESPACE_END

#endif // !BOOST_HANA_FWD_STRING_HPP

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