55 lines
1.3 KiB
Plaintext
55 lines
1.3 KiB
Plaintext
[#string]
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[section string]
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[h1 Synopsis]
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template <char C1, ..., char Cn>
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struct string;
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This is a [link metaprogramming_value template metaprogramming value].
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[table Arguments
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[[Name] [Type]]
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[[`C1`..`Cn`] [character values]]
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]
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[h1 Description]
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Compile-time data-structure describing a string object. These string objects are
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compatible with `boost::mpl::string`, but they accept only individual characters
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as arguments. When `constexpr` is available, they can be constructed using the
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[link BOOST_METAPARSE_STRING `BOOST_METAPARSE_STRING`] macro.
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The tag of the strings is [link string_tag `string_tag`].
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[*C++98]: The maximum length of these strings is controlled by the
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`BOOST_METAPARSE_LIMIT_STRING_SIZE` macro.
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[*C++11]: The strings use variadic templates.
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[h1 Header]
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#include <boost/metaparse/string.hpp>
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[h1 Example]
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#include <boost/metaparse/string.hpp>
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#include <type_traits>
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using namespace boost::metaparse;
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using hello1 = string<'H','e','l','l','o'>;
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using hello2 = BOOST_METAPARSE_STRING("Hello");
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static_assert(
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std::is_same<
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string<'H', 'e', 'l', 'l', 'o'>,
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BOOST_METAPARSE_STRING("Hello")
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>::type::value,
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"The type generated by the macro should be identical to the hand-crafted one."
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);
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[endsect]
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