[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [fpOnce](./rc-js-util.fponce.md) ## fpOnce() function Creates a function that can be called many times but will run at most once. **Signature:** ```typescript export declare function fpOnce(initialize: (...args: TArgs) => TRet): (...args: TArgs) => TRet; ``` ## Parameters

Parameter	Type	Description
initialize	(...args: TArgs) => TRet

**Returns:** (...args: TArgs) => TRet ## Remarks See [fpOnce()](./rc-js-util.fponce.md).