Programming-Idioms

History of Idiom 78 > diff from v13 to v14

Edit summary for version 14 :

Version 13

2015-09-05, 13:10:44

Version 14

2015-09-05, 13:11:18

Idiom #78 "do while" loop

Execute a block once, then execute it again as long as boolean condition c is true.

Idiom #78 "do while" loop

Execute a block once, then execute it again as long as boolean condition c is true.

Code
dowhile :: (a -> Bool) -> IO a -> IO ()
dowhile c b = do a <- b
  if (c a) then dowhile c b else return ()

dowhile (/="END") getLine
Code
dowhile :: (a -> Bool) -> IO a -> IO ()
dowhile c b = do a <- b
  if (c a) then dowhile c b else return ()

dowhile (/="END") getLine