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Within LTS Haskell 24.38 (ghc-9.10.3)

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  1. (-<.>) :: WindowsPath -> WindowsString -> WindowsPath

    filepath System.OsPath.Windows

    Remove the current extension and add another, equivalent to replaceExtension. 

    "/directory/path.txt" -<.> "ext" == "/directory/path.ext"
"/directory/path.txt" -<.> ".ext" == "/directory/path.ext"
"foo.o" -<.> "c" == "foo.c"

  2. (<.>) :: WindowsPath -> WindowsString -> WindowsPath

    filepath System.OsPath.Windows

    Add an extension, even if there is already one there, equivalent to addExtension. 

    "/directory/path" <.> "ext" == "/directory/path.ext"
"/directory/path" <.> ".ext" == "/directory/path.ext"

  3. (-<.>) :: ShortByteString -> ShortByteString -> ShortByteString

    filepath System.OsPath.Windows.Internal

    Remove the current extension and add another, equivalent to replaceExtension. 

    "/directory/path.txt" -<.> "ext" == "/directory/path.ext"
"/directory/path.txt" -<.> ".ext" == "/directory/path.ext"
"foo.o" -<.> "c" == "foo.c"

  4. (<.>) :: ShortByteString -> ShortByteString -> ShortByteString

    filepath System.OsPath.Windows.Internal

    Add an extension, even if there is already one there, equivalent to addExtension. 

    "/directory/path" <.> "ext" == "/directory/path.ext"
"/directory/path" <.> ".ext" == "/directory/path.ext"

  5. (<*.) :: Parser a -> ByteString -> Parser a

    attoparsec Data.Attoparsec.ByteString.Char8

    Deprecated: This is no longer necessary, and will be removed. Use <* instead.

  6. (<*.) :: Parser a -> Text -> Parser a

    attoparsec Data.Attoparsec.Text

    Deprecated: This is no longer necessary, and will be removed. Use <* instead.

  7. (<*.) :: Parser a -> Text -> Parser a

    attoparsec Data.Attoparsec.Text.Lazy

    Deprecated: This is no longer necessary, and will be removed. Use <* instead.

  8. (^..) :: s -> Getting (Endo [a]) s a -> [a]

    lens Control.Lens.Fold

    A convenient infix (flipped) version of toListOf. 

    >>> [[1,2],[3]]^..id
[[[1,2],[3]]]

>>> [[1,2],[3]]^..traverse
[[1,2],[3]]

>>> [[1,2],[3]]^..traverse.traverse
[1,2,3]

    >>> (1,2)^..both
[1,2]

    toList xs ≡ xs ^.. folded
(^..) ≡ flip toListOf

    (^..) :: s -> Getter s a     -> a :: s -> Fold s a       -> a :: s -> Lens' s a      -> a :: s -> Iso' s a       -> a :: s -> Traversal' s a -> a :: s -> Prism' s a     -> [a]

  9. (^@..) :: s -> IndexedGetting i (Endo [(i, a)]) s a -> [(i, a)]

    lens Control.Lens.Fold

    An infix version of itoListOf.

  10. (^.) :: s -> Getting a s a -> a

    lens Control.Lens.Getter

    View the value pointed to by a Getter or Lens or the result of folding over all the results of a Fold or Traversal that points at a monoidal values. This is the same operation as view with the arguments flipped. The fixity and semantics are such that subsequent field accesses can be performed with (.). 

    >>> (a,b)^._2
b

    >>> ("hello","world")^._2
"world"

    >>> import Data.Complex

>>> ((0, 1 :+ 2), 3)^._1._2.to magnitude
2.23606797749979

    (^.) ::             s -> Getter s a     -> a
(^.) :: Monoid m => s -> Fold s m       -> m
(^.) ::             s -> Iso' s a       -> a
(^.) ::             s -> Lens' s a      -> a
(^.) :: Monoid m => s -> Traversal' s m -> m

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