Creates a function that is restricted to invoking func once. Repeat calls to the function return the value of the first call. The func is invoked with the this binding and arguments of the created function.
The function to restrict.
Returns the new restricted function.
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Creates a function that is restricted to invoking func once. Repeat calls to the function return the value of the first call. The func is invoked with the this binding and arguments of the created function.