Learn Haskell

Spent 1 hour trying to understand below code, but finally got it.

filter pred lst

| null lst = []

| otherwise = if pred x

then x:filter pred xs

else filter pred xs

where x:xs=lst

spent 30 mins trying to understand the code below.

leng :: [a] -> Int

leng [] = 0

leng (x:xs) = 1 + length xs

I understand it now.

spent 20 mins trying to understand some haskell code from the tutorial.

spent 15 mins learning

Spent 1 hour.

Spent 10-15mins week 2 lessons

started week 2 lessons

finished week 1 finally after holiday.

Week 1 lessons 1.1-1.6 complete

Latest ghci installed on machine