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Within LTS Haskell 24.32 (ghc-9.10.3)

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  1. pHPrintStringNoColor :: MonadIO m => Handle -> String -> m ()

    pretty-simple Text.Pretty.Simple

    Like pPrintStringNoColor, but take a Handle to determine where to print to.

    >>> pHPrintStringNoColor stdout $ show $ Just ["hello", "bye"]
    Just
    [ "hello"
    , "bye"
    ]
    

  2. pHPrintStringOpt :: MonadIO m => CheckColorTty -> OutputOptions -> Handle -> String -> m ()

    pretty-simple Text.Pretty.Simple

    Similar to pPrintStringOpt, but take a Handle to determine where to print to.

    >>> let foo = show (1, (2, "hello", 3))
    
    >>> pHPrintStringOpt CheckColorTty defaultOutputOptionsNoColor stdout foo
    ( 1
    ,
    ( 2
    , "hello"
    , 3
    )
    )
    

  3. pPrint :: (MonadIO m, Show a) => a -> m ()

    pretty-simple Text.Pretty.Simple

    Pretty-print any data type that has a Show instance. If you've never seen MonadIO before, you can think of this function as having the following type signature:

    pPrint :: Show a => a -> IO ()
    
    This function will only use colors if it detects it's printing to a TTY. This function is for printing to a dark background. Use pPrintLightBg for printing to a terminal with a light background. Different colors are used. Prints to stdout. Use pHPrint to print to a different Handle.
    >>> pPrint [Just (1, "hello")]
    [ Just
    ( 1
    , "hello"
    )
    ]
    

  4. pPrintDarkBg :: (MonadIO m, Show a) => a -> m ()

    pretty-simple Text.Pretty.Simple

    Alias for pPrint.

  5. pPrintForceColor :: (MonadIO m, Show a) => a -> m ()

    pretty-simple Text.Pretty.Simple

    Similar to pPrint, but print in color regardless of whether the output goes to a TTY or not. See pPrint for an example of how to use this function.

  6. pPrintForceColorDarkBg :: (MonadIO m, Show a) => a -> m ()

    pretty-simple Text.Pretty.Simple

    Alias for pPrintForceColor.

  7. pPrintForceColorLightBg :: (MonadIO m, Show a) => a -> m ()

    pretty-simple Text.Pretty.Simple

    Just like pPrintForceColorDarkBg, but for printing to a light background.

  8. pPrintLightBg :: (MonadIO m, Show a) => a -> m ()

    pretty-simple Text.Pretty.Simple

    Just like pPrintDarkBg, but for printing to a light background.

  9. pPrintNoColor :: (MonadIO m, Show a) => a -> m ()

    pretty-simple Text.Pretty.Simple

    Similar to pPrint, but doesn't print in color. However, data types will still be indented nicely.

    >>> pPrintNoColor $ Just ["hello", "bye"]
    Just
    [ "hello"
    , "bye"
    ]
    

  10. pPrintOpt :: (MonadIO m, Show a) => CheckColorTty -> OutputOptions -> a -> m ()

    pretty-simple Text.Pretty.Simple

    Similar to pPrint but takes OutputOptions to change how the pretty-printing is done. For example, pPrintOpt can be used to make the indentation much smaller than normal. This is what the normal indentation looks like:

    >>> pPrintOpt NoCheckColorTty defaultOutputOptionsNoColor $ Just ("hello", "bye")
    Just
    ( "hello"
    , "bye"
    )
    
    This is what smaller indentation looks like:
    >>> let smallIndent = defaultOutputOptionsNoColor {outputOptionsIndentAmount = 1}
    
    >>> pPrintOpt CheckColorTty smallIndent $ Just ("hello", "bye")
    Just
    ( "hello"
    , "bye"
    )
    
    Lines in strings get indented
    >>> pPrintOpt NoCheckColorTty defaultOutputOptionsNoColor (1, (2, "foo\nbar\nbaz", 3))
    ( 1
    ,
    ( 2
    , "foo
    bar
    baz"
    , 3
    )
    )
    
    Lines get indented even in custom show instances
    >>> data Foo = Foo
    
    >>> instance Show Foo where show _ = "foo\nbar\nbaz"
    
    >>> pPrintOpt CheckColorTty defaultOutputOptionsNoColor (1, (2, Foo, 3))
    ( 1
    ,
    ( 2
    , foo
    bar
    baz
    , 3
    )
    )
    
    CheckColorTty determines whether to test stdout for whether or not it is connected to a TTY. If set to NoCheckColorTty, then pPrintOpt won't check if stdout is a TTY. It will print in color depending on the value of outputOptionsColorOptions. If set to CheckColorTty, then pPrintOpt will check if stdout is conneted to a TTY. If stdout is determined to be connected to a TTY, then it will print in color depending on the value of outputOptionsColorOptions. If stdout is determined to NOT be connected to a TTY, then it will NOT print in color, regardless of the value of outputOptionsColorOptions.

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