Functional Programming (H) - 1.10

1. Does the evaluation order of Haskell sub-expressions affect the overall value of the expression?

If expressions are evaluated in a different order, then the final value might be different.

No, evaluation order does not affect the final value.

2. What is the difference between a named function and a lambda function assigned to a variable? For example:

f x = x + 1 -- or f = \x -> x+1

It is less efficient to define functions in terms of lambdas.

There is no meaningful difference.

3. Given the definition:

sum_ratio = \x y z -> (x + y) / z

then what is the value of:

1 + 4* sum_ratio 4 2 3

5

9

4. What does the following expression evaluate to?

['a','d' .. 'z']

â€œadgjmpsvyâ€

â€œadzâ€

5. Given a list xs, what does the following expression evaluate to?

[]++xs == xs++[]

False

True