CODEWITHSUNDEEP
haskell
blue-sky
blue-sky

Reputation: 53856

How to describe this function definition?

Is this the correct way to describe a function specification and definition

MagicHaskeller generates a function given a specification.

For example the specification : f [ 3 , 4 , 5.6 ] ~= 4.2 generates the function f = (\a b -> sum a / 3)

Put another way : the function : f [ 3 , 4 , 5.6 ] ~= 4.2 accepts a list of three values and generates an approximate value by applying a transformation to these list values. The function generated f = (\a b -> sum a / 3) takes a function a which sums the list values and divides by 3. I think the statement takes a function a which sums the list values and divides by 3 is incorrect. What is the correct interpretation of the function f = (\a b -> sum a / 3) ?

Is my terminology correct ?

Upvotes: 0

Views: 113

Answers (1)

Sebastian Redl
Sebastian Redl

Reputation: 72044

Not quite, but close.

f is a function (it's a name bound to a lambda expression) that takes two arguments: a list of numbers a and some b that is completely ignored. The function returns the sum of the numbers in the list divided by three.

Upvotes: 1

Related Questions