Difference between revisions of "Unix tools/yes"

From HaskellWiki
Jump to navigation Jump to search
(Deleting page that hasn't been updated for over 10 years)
m (Various minor changes)
 
(2 intermediate revisions by 2 users not shown)
Line 1: Line 1:
  +
== yes ==
  +
  +
A simple utility to repeatedly print <code>"y"</code> to standard output.
  +
  +
Here are some various ways this small program can be written:
  +
  +
{|
  +
|<haskell>
  +
main = let y = putStrLn "y" >> y in y
  +
</haskell>
  +
|}
  +
  +
{|
  +
|<haskell>
  +
main = putStrLn $ concat $ repeat "y\n"
  +
</haskell>
  +
|}
  +
  +
{|
  +
|<haskell>
  +
main = let y = 'y' : '\n' : y in putStrLn y
  +
</haskell>
  +
|}
  +
  +
{|
  +
|<haskell>
  +
main = putStrLn "y" >> main
  +
</haskell>
  +
|}
  +
  +
{|
  +
|<haskell>
  +
main = putStrLn $ cycle "y\n"
  +
</haskell>
  +
|}

Latest revision as of 03:24, 26 April 2021

yes

A simple utility to repeatedly print "y" to standard output.

Here are some various ways this small program can be written: 

main = let y = putStrLn "y" >> y in y

main = putStrLn $ concat $ repeat "y\n"

main = let y = 'y' : '\n' : y in putStrLn y

main = putStrLn "y" >> main

main = putStrLn $ cycle "y\n"
Retrieved from "https://wiki.haskell.org/index.php?title=Unix_tools/yes&oldid=64359"