Created
September 21, 2015 03:06
-
-
Save LeviSchuck/1070109b98946a4c515f to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| {-# LANGUAGE RecordWildCards #-} | |
| module Ruben where | |
| import Debug.Trace | |
| data SomeState = SomeState | |
| { a :: Int | |
| , b :: Int | |
| , c :: Int | |
| } deriving(Show) | |
| someFunction s@SomeState{..} = if a < c | |
| then let a' = a + 2 | |
| b' = b * 2 | |
| in trace (show s) (someFunction s {a = a', b = b'}) | |
| else putStrLn (show s) | |
| {- | |
| *Ruben> someFunction (SomeState 1 1 20) | |
| SomeState {a = 1, b = 1, c = 20} | |
| SomeState {a = 3, b = 2, c = 20} | |
| SomeState {a = 5, b = 4, c = 20} | |
| SomeState {a = 7, b = 8, c = 20} | |
| SomeState {a = 9, b = 16, c = 20} | |
| SomeState {a = 11, b = 32, c = 20} | |
| SomeState {a = 13, b = 64, c = 20} | |
| SomeState {a = 15, b = 128, c = 20} | |
| SomeState {a = 17, b = 256, c = 20} | |
| SomeState {a = 19, b = 512, c = 20} | |
| SomeState {a = 21, b = 1024, c = 20} | |
| -} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment