1.1 KiB
Accumulate
Implement the accumulate operation, which, given a collection and an
operation to perform on each element of the collection, returns a new
collection containing the result of applying that operation to each element of
the input collection.
Given the collection of numbers:
- 1, 2, 3, 4, 5
And the operation:
- square a number (
x => x * x)
Your code should be able to produce the collection of squares:
- 1, 4, 9, 16, 25
Check out the test suite to see the expected function signature.
Restrictions
Keep your hands off that collect/map/fmap/whatchamacallit functionality provided by your standard library! Solve this one yourself using other basic tools instead.
Hints
This exercise requires you to write an extension method. For more information, see this page.
Source
Conversation with James Edward Gray II https://twitter.com/jeg2
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.