json/api/json_pointer/operator_string_t.md

nlohmann::json_pointer::operator string_t

operator string_t() const

Return a string representation of the JSON pointer.

Return value

A string representation of the JSON pointer

Possible implementation

operator string_t() const
{
    return to_string();
}

Notes

!!! warning "Deprecation"

This function is deprecated in favor of [`to_string`](to_string.md) and will be removed in a future major version
release.

See the [migration guide](../../integration/migration_guide.md#json-pointers) for how to update existing code.

Examples

??? example

The example shows how JSON Pointers can be implicitly converted to strings.
 
```cpp
#include <iostream>
#include <nlohmann/json.hpp>

using json = nlohmann::json;

int main()
{
    // different JSON Pointers
    json::json_pointer ptr1("/foo/0");
    json::json_pointer ptr2("/a~1b");

    // implicit conversion to string
    std::string s;
    s += ptr1;
    s += "\n";
    s += ptr2;

    std::cout << s << std::endl;
}

```

Output:

```json
/foo/0
/a~1b

```

See also

• to_string return a string representation of the JSON pointer
• string_t - type for strings

Version history

• Since version 2.0.0.
• Changed type to string_t and deprecated in version 3.11.0.