Memoization
Memoization
Memoization uses a closure to remember previous inputs and results. The wrapped function still looks like a normal function to callers, but it can skip work when it has already seen the same input.
The cache must live outside the returned function's individual calls, but inside the wrapper so it stays private. Repeated calls with the same argument should return the cached result without calling the original function again.
Your task: Complete memoizeOneArg. It receives a single-argument function and returns a cached version of it. The cached function should store results by argument value and reuse them on repeated calls.
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Memoization
Memoization uses a closure to remember previous inputs and results. The wrapped function still looks like a normal function to callers, but it can skip work when it has already seen the same input.
The cache must live outside the returned function's individual calls, but inside the wrapper so it stays private. Repeated calls with the same argument should return the cached result without calling the original function again.
Your task: Complete memoizeOneArg. It receives a single-argument function and returns a cached version of it. The cached function should store results by argument value and reuse them on repeated calls.