diff options
Diffstat (limited to 'haskell.html.markdown')
| -rw-r--r-- | haskell.html.markdown | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/haskell.html.markdown b/haskell.html.markdown index 4d5ce642..11109ab8 100644 --- a/haskell.html.markdown +++ b/haskell.html.markdown @@ -367,14 +367,14 @@ main'' = do putStrLn result putStrLn "This was all, folks!" --- The type `IO` is an example of a "monad". The way Haskell uses a monad to do IO allows it to --- be a purely functional language. Any function that interacts with the outside world (i.e. does IO) --- gets marked as `IO` in its type signature. This lets us reason about what --- functions are "pure" (don't interact with the outside world or modify state) --- and what functions aren't. - --- This is a powerful feature, because it's easy to run pure functions concurrently --- so concurrency in Haskell is very easy. +-- The type `IO` is an example of a "monad". The way Haskell uses a monad to +-- do IO allows it to be a purely functional language. Any function that +-- interacts with the outside world (i.e. does IO) gets marked as `IO` in its +-- type signature. This lets us reason about what functions are "pure" (don't +-- interact with the outside world or modify state) and what functions aren't. + +-- This is a powerful feature, because it's easy to run pure functions +-- concurrently; so, concurrency in Haskell is very easy. ---------------------------------------------------- |