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siv::NamedParameter\n**siv::NamedParameter** is a simple named parameter interface for modern C++.\n\n## Examples\nThis prints `month: 12 day: 31` to stdout:\n```cpp\nnamespace Arg\n{\n\tSIV_MAKE_NAMED_PARAMETER(month);\n\tSIV_MAKE_NAMED_PARAMETER(day);\n}\n\nvoid Date_impl(int month, int day)\n{\n\tstd::cout \u003c\u003c \"month: \" \u003c\u003c month \u003c\u003c \" day: \" \u003c\u003c day \u003c\u003c '\\n';\n}\n\nvoid Date(Arg::month_\u003cint\u003e m, Arg::day_\u003cint\u003e d)\n{\n\tDate_impl(m.value(), d.value());\n}\n\nvoid Date(Arg::day_\u003cint\u003e d, Arg::month_\u003cint\u003e m)\n{\n\tDate_impl(m.value(), d.value());\n}\n\nint main()\n{\n\tDate(Arg::month = 12, Arg::day = 31);\n\tDate(Arg::day = 31, Arg::month = 12);\n}\n```\n\nArguments can also be accessed by `operator*` and `operator-\u003e`.\n```cpp\nnamespace Arg\n{\n\tSIV_MAKE_NAMED_PARAMETER(name);\n}\n\nvoid Print(Arg::name_\u003cstd::string\u003e name)\n{\n\tstd::cout \u003c\u003c \"name:\" \u003c\u003c *name \u003c\u003c '\\n';\n\tstd::cout \u003c\u003c \"length:\" \u003c\u003c name-\u003elength() \u003c\u003c '\\n';\n}\n\nint main()\n{\n\tPrint(Arg::name = \"John\");\n}\n```\n\n`operator()` can construct the object from the arguments to the constructor of the element.\n```cpp\nnamespace Arg\n{\n\tSIV_MAKE_NAMED_PARAMETER(name);\n}\n\nvoid Print(Arg::name_\u003cstd::string\u003e name)\n{\n\tstd::cout \u003c\u003c \"name:\" \u003c\u003c *name \u003c\u003c '\\n';\n\tstd::cout \u003c\u003c \"length:\" \u003c\u003c name-\u003elength() \u003c\u003c '\\n';\n}\n\nint main()\n{\n\tPrint(Arg::name(5, 'A'));\n}\n```\n\nRight-most parameters can have default arguments.\n```cpp\nnamespace Arg\n{\n\tSIV_MAKE_NAMED_PARAMETER(name);\n}\n\nvoid Print(Arg::name_\u003cstd::string\u003e name = (Arg::name = \"anonymous\"))\n{\n\tstd::cout \u003c\u003c \"name:\" \u003c\u003c *name \u003c\u003c '\\n';\n\tstd::cout \u003c\u003c \"length:\" \u003c\u003c name-\u003elength() \u003c\u003c '\\n';\n}\n\nint main()\n{\n\tPrint();\n}\n```\n\n## License\nNamedParameter is distributed under the MIT license.\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Freputeless%2Fnamedparameter","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Freputeless%2Fnamedparameter","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Freputeless%2Fnamedparameter/lists"}