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nlohmann
40 lines
605 B
Markdown
40 lines
605 B
Markdown
# <small>nlohmann::json_pointer::</small>front
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```cpp
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const string_t& front() const;
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```
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Return the first reference token.
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## Return value
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First reference token.
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## Exceptions
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Throws [out_of_range.405](../../home/exceptions.md#jsonexceptionout_of_range405) if the JSON pointer has no parent.
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## Complexity
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Constant.
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## Examples
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??? example
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The example shows the usage of `front`.
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```cpp
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--8<-- "examples/json_pointer__front.cpp"
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```
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Output:
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```json
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--8<-- "examples/json_pointer__front.output"
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```
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## Version history
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- Added in version 3.12.x.
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