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api/json_pointer/push_front.md

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+# <small>nlohmann::json_pointer::</small>push_front
+
+```cpp
+void push_front(const string_t& token);
+
+void push_front(string_t&& token);
+```
+
+Append an unescaped token at the start of the reference pointer.
+
+## Parameters
+
+`token` (in)
+:   token to add
+
+## Complexity
+
+Linear in the number of reference tokens in the `json_pointer`.
+
+## Examples
+
+??? example
+
+    The example shows the result of `push_front` for different JSON Pointers.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__push_front.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__push_front.output"
+    ```
+
+## Version history
+
+- Added in version 3.12.x.