json/docs/examples/operator_array__keytype_const.c++17.cpp

#include <iostream>
#include <string_view>
#include <nlohmann/json.hpp>

using namespace std::string_view_literals;
using json = nlohmann::json;

int main()
{
    // create a JSON object
    const json object =
    {
        {"one", 1}, {"two", 2}, {"three", 2.9}
    };

    // output element with key "two"
    std::cout << object["two"sv] << '\n';
}
:memo: cleanup after #650 As <iostream> is not included in json.hpp any more, all code examples need to include <iostream> now. 2017-07-09 11:51:38 +02:00			`#include <iostream>`
More documentation updates for 3.11.0 (#3553) * mkdocs: add string_view examples * mkdocs: reference underlying operators * mkdocs: add operator<=> examples * mkdocs: fix style check issues * mkdocs: tweak BJData page * mkdocs: add CMake option hints to macros * mkdocs: fix JSON_DISABLE_ENUM_SERIALIZATION definition * mkdocs: fix link to unit-udt.cpp * mkdocs: fix "Arbitrary Type Conversions" title * mkdocs: link to api/macros/.md instead of features/macros.md mkdocs: document JSON_DisableEnumSerialization CMake option * mkdocs: encode required C++ standard in example files * docset: detect gsed/sed * docset: update index * docset: fix CSS patching * docset: add list_missing_pages make target * docset: add list_removed_paths make target * docset: replace page titles with name from index * docset: add install target for Zeal docset browser * Use GCC_TOOL in ci_test_documentation target 2022-07-31 14:05:58 +02:00			`#include <string_view>`
:bookmark: set version to 3.1.0 - updated documentation wrt. new repository layout - temporarily switched off Homebrew --HEAD building (can only be switched on after release) - set copyright date to 2018 2018-02-01 22:20:26 +01:00			`#include <nlohmann/json.hpp>`
minor changes 2015-06-25 00:40:16 +02:00
More documentation updates for 3.11.0 (#3553) * mkdocs: add string_view examples * mkdocs: reference underlying operators * mkdocs: add operator<=> examples * mkdocs: fix style check issues * mkdocs: tweak BJData page * mkdocs: add CMake option hints to macros * mkdocs: fix JSON_DISABLE_ENUM_SERIALIZATION definition * mkdocs: fix link to unit-udt.cpp * mkdocs: fix "Arbitrary Type Conversions" title * mkdocs: link to api/macros/.md instead of features/macros.md mkdocs: document JSON_DisableEnumSerialization CMake option * mkdocs: encode required C++ standard in example files * docset: detect gsed/sed * docset: update index * docset: fix CSS patching * docset: add list_missing_pages make target * docset: add list_removed_paths make target * docset: replace page titles with name from index * docset: add install target for Zeal docset browser * Use GCC_TOOL in ci_test_documentation target 2022-07-31 14:05:58 +02:00			`using namespace std::string_view_literals;`
removed "using namespace" from examples 2016-01-30 20:23:14 +01:00			`using json = nlohmann::json;`
minor changes 2015-06-25 00:40:16 +02:00
			`int main()`
			`{`
			`// create a JSON object`
re-adding const version operator[] (#135, #159) It was a good idea to implement a const version of operator[] it in the first place. I was a pity that this implementation was flawed. It was a mistake to remove the const version completely. This commit re-introduces the const version. My apologies for all the inconvenience. 2015-12-21 08:42:42 +01:00			`const json object =`
minor changes 2015-06-25 00:40:16 +02:00			`{`
			`{"one", 1}, {"two", 2}, {"three", 2.9}`
			`};`

			`// output element with key "two"`
More documentation updates for 3.11.0 (#3553) * mkdocs: add string_view examples * mkdocs: reference underlying operators * mkdocs: add operator<=> examples * mkdocs: fix style check issues * mkdocs: tweak BJData page * mkdocs: add CMake option hints to macros * mkdocs: fix JSON_DISABLE_ENUM_SERIALIZATION definition * mkdocs: fix link to unit-udt.cpp * mkdocs: fix "Arbitrary Type Conversions" title * mkdocs: link to api/macros/.md instead of features/macros.md mkdocs: document JSON_DisableEnumSerialization CMake option * mkdocs: encode required C++ standard in example files * docset: detect gsed/sed * docset: update index * docset: fix CSS patching * docset: add list_missing_pages make target * docset: add list_removed_paths make target * docset: replace page titles with name from index * docset: add install target for Zeal docset browser * Use GCC_TOOL in ci_test_documentation target 2022-07-31 14:05:58 +02:00			`std::cout << object["two"sv] << '\n';`
minor changes 2015-06-25 00:40:16 +02:00			`}`