Text.Printf.TH

Formatting strings

s :: QuasiQuoter

[s|Hello, %s! (%d people greeted)|] :: ... -> String

This formatter follows the guidelines listed here, except for %n (store number of printed characters) for obvious reasons.

%c     :: Char
%s     :: String

%?     :: Show a => a

%u     :: Natural

%d, %i :: Integral i => i
%o     :: Integral i => i
%x, %X :: Integral i => i

%a, %A :: RealFloat f => f
%e, %E :: RealFloat f => f
%f, %F :: RealFloat f => f
%g, %G :: RealFloat f => f

%p     :: Ptr a

st :: QuasiQuoter

[st|Hello, %s! (%d people greeted)|] :: ... -> Text

sb :: QuasiQuoter

[sb|Hello, %s! (%d people greeted)|] :: ... -> ByteString

The resulting string is UTF8-encoded.

Printing strings

hp :: QuasiQuoter

[hp|Hello, %s! (%d people greeted)|] :: MonadIO m => Handle -> ... -> m ()

Prints the produced string to the provided Handle. Like C printf, newline is not appended.

p :: QuasiQuoter

[p|Hello, %s! (%d people greeted)|] :: MonadIO m => ... -> m ()

[p|...|] arg1 arg2...

is equivalent to

[hp|...|] stdout arg1 arg2...