Comment by nfw2

The performance gap of running a for loop inside or outside a function call is negligible in most real usage.

The premise that you can define best patterns like this, removed from context with toy words like frobnicate, is flawed. You should abstract your code in such a way that the operations contained are clearly intuited by the names and parameters of the abstraction boundaries. Managing cognitive load >>> nickle and dime-ing performance in most cases.