空值 (void)
表示函数不返回任何值。类似于 C 和 C++ 中的 void
返回值
空值对象由以下函数和方法返回
add_global_arguments()add_global_link_arguments()add_project_arguments()add_project_dependencies()add_project_link_arguments()add_test_setup()assert()benchmark()debug()error()install_data()install_emptydir()install_headers()install_man()install_subdir()install_symlink()message()project()set_variable()subdir()subdir_done()summary()test()unset_variable()warning()cfg_data.merge_from()cfg_data.set()cfg_data.set10()cfg_data.set_quoted()cmake_options.add_cmake_defines()env.append()env.prepend()env.set()env.unset()meson.add_devenv()meson.add_dist_script()meson.add_install_script()meson.add_postconf_script()meson.install_dependency_manifest()meson.override_dependency()meson.override_find_program()
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