Scan Higher Order Function Assignment

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Background

Previously, we have built Sum_Scan_Assignment sum_scan. This is a specific version of scan where the operation is +. We will build a higher-order function scan which takes an operation to apply, as well as a list.

Code To Implement

scan

Clients

scan op+

For example:

scan op+ [131,231,425]

would produce:

[131, 362, 787]
xs 131 231 425
sum_scan(xs) 131 362 787

scan op*

For example:

scan op* [131,231,425]

would produce:

[131, 30261, 12860925]
xs 131 231 425
sum_scan(xs) 131 30261 12860925

Testing