57 lines
1.9 KiB
Markdown
57 lines
1.9 KiB
Markdown
# <small>nlohmann::</small>ordered_json_editable_view
|
|
|
|
<small>Defined in header `<nlohmann/json_view.hpp>`</small>
|
|
|
|
```cpp
|
|
using ordered_json_editable_view = basic_json_view<ordered_json, true>;
|
|
```
|
|
|
|
This type is a [`basic_json_view`](basic_json_view/index.md) of a value of an
|
|
[`ordered_json_editable_document`](ordered_json_editable_document.md), the corresponding view for
|
|
[`ordered_json_view`](ordered_json_view.md) the way [`json_editable_view`](json_editable_view.md) is for
|
|
[`json_view`](json_view.md).
|
|
|
|
## Examples
|
|
|
|
??? example
|
|
|
|
The example below is the same as [`ordered_json_editable_document`'s](ordered_json_editable_document.md): the
|
|
views `set` returns see the document's member order preserved on `materialize()`, unlike for a
|
|
[`json_editable_document`](json_editable_document.md).
|
|
|
|
```cpp
|
|
#include <iostream>
|
|
#include <nlohmann/json_view.hpp>
|
|
|
|
using ordered_json_editable_document = nlohmann::ordered_json_editable_document;
|
|
|
|
int main()
|
|
{
|
|
// ordered_json_editable_document is basic_json_document<nlohmann::ordered_json, true>
|
|
ordered_json_editable_document doc = ordered_json_editable_document::parse(R"({"z": 1, "a": 2, "m": 3})");
|
|
doc.set(doc.root(), "b", 4); // set() always appends a new member at the end
|
|
|
|
// materialize() preserves the document order (with "b" at the end),
|
|
// instead of sorting the keys the way json_editable_document does
|
|
std::cout << doc.root().materialize().dump() << '\n';
|
|
}
|
|
|
|
```
|
|
|
|
Output:
|
|
|
|
```json
|
|
{"z":1,"a":2,"m":3,"b":4}
|
|
|
|
```
|
|
|
|
## See also
|
|
|
|
- [ordered_json_editable_document](ordered_json_editable_document.md) - the document type this view refers into
|
|
- [ordered_json_view](ordered_json_view.md) - the corresponding read-only view
|
|
- [json_editable_view](json_editable_view.md) - the corresponding view for `json_editable_document`
|
|
|
|
## Version history
|
|
|
|
Since version 3.13.0.
|