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Within LTS Haskell 24.6 (ghc-9.10.2)

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Exact lookup

1. stripInfix :: Eq a => [a] -> [a] -> Maybe ([a], [a])

   extra	Data.List.Extra

   Return the the string before and after the search string, or Nothing if the search string is not present. Examples:

   stripInfix "::" "a::b::c" == Just ("a", "b::c")
   stripInfix "/" "foobar"   == Nothing
   

2. stripInfixEnd :: Eq a => [a] -> [a] -> Maybe ([a], [a])

   extra	Data.List.Extra

   Similar to stripInfix, but searches from the end of the string.

   stripInfixEnd "::" "a::b::c" == Just ("a::b", "c")
   

3. stripSuffix :: Eq a => [a] -> [a] -> Maybe [a]

   extra	Data.List.Extra

   Return the prefix of the second list if its suffix matches the entire first list. Examples:

   stripSuffix "bar" "foobar" == Just "foo"
   stripSuffix ""    "baz"    == Just "baz"
   stripSuffix "foo" "quux"   == Nothing
   

4. dropPrefix :: Eq a => [a] -> [a] -> [a]

   extra	Extra

   Drops the given prefix from a list. It returns the original sequence if the sequence doesn't start with the given prefix.

   dropPrefix "Mr. " "Mr. Men" == "Men"
   dropPrefix "Mr. " "Dr. Men" == "Dr. Men"
   

5. dropSuffix :: Eq a => [a] -> [a] -> [a]

   extra	Extra

   Drops the given suffix from a list. It returns the original sequence if the sequence doesn't end with the given suffix.

   dropSuffix "!" "Hello World!"  == "Hello World"
   dropSuffix "!" "Hello World!!" == "Hello World!"
   dropSuffix "!" "Hello World."  == "Hello World."
   

6. stripInfix :: Eq a => [a] -> [a] -> Maybe ([a], [a])

   extra	Extra

   Return the the string before and after the search string, or Nothing if the search string is not present. Examples:

   stripInfix "::" "a::b::c" == Just ("a", "b::c")
   stripInfix "/" "foobar"   == Nothing
   

7. stripInfixEnd :: Eq a => [a] -> [a] -> Maybe ([a], [a])

   extra	Extra

   Similar to stripInfix, but searches from the end of the string.

   stripInfixEnd "::" "a::b::c" == Just ("a::b", "c")
   

8. stripSuffix :: Eq a => [a] -> [a] -> Maybe [a]

   extra	Extra

   Return the prefix of the second list if its suffix matches the entire first list. Examples:

   stripSuffix "bar" "foobar" == Just "foo"
   stripSuffix ""    "baz"    == Just "baz"
   stripSuffix "foo" "quux"   == Nothing
   

9. isPrefixOf :: Eq a => [a] -> NonEmpty a -> Bool

   base-compat	Data.List.NonEmpty.Compat

   The isPrefixOf function returns True if the first argument is a prefix of the second.

10. unsafeFixIO :: (a -> IO a) -> IO a

    base-compat	System.IO.Unsafe.Compat

    A slightly faster version of fixIO that may not be safe to use with multiple threads. The unsafety arises when used like this:

    unsafeFixIO $ \r -> do
    forkIO (print r)
    return (...)
    

    In this case, the child thread will receive a NonTermination exception instead of waiting for the value of r to be computed.

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