These notes are personal, not sure how much sense they would make to anyone else. i.e read at your own risk :d
- if needs else
- if is an expression
- an expression is code that returns a value
- valid in functions name, usually used a non lazy function (strict)
- Functions names start with lowercase
- When a function doesn't take any parameters, we usually say it's a definition (or a name). Because we can't change what names (and functions) mean once we've defined them
- not sure how I feel about throwing exceptions
- Use cabal sandbox init
- Use cabal init
- Use cabal build
data Config = Config
{ value1 :: String
, value2 :: Int
} deriving(Show)Using Show , Show is a typeclass
Applicative are functors
import Control.Monad
import Data.Maybe
<*> --apply method
<$> -- fmap
liftM2
fromMaybe
forceEither- Stackage