length

O(n). length returns the length of a finite list as an Int. It is an instance of the more general Data.List.genericLength, the result type of which may be any kind of number.

lengthArray0 :: (Storable a, Eq a) => a -> Ptr a -> IO Int

base Foreign.Marshal.Array

Return the number of elements in an array, excluding the terminator

length :: ByteString -> Int

bytestring Data.ByteString, bytestring Data.ByteString.Char8

O(1) length returns the length of a ByteString as an Int.

length :: ByteString -> Int64

bytestring Data.ByteString.Lazy, bytestring Data.ByteString.Lazy.Char8

O(n\c)/ length returns the length of a ByteString as an Int64

length :: Seq a -> Int

containers Data.Sequence

O(1). The number of elements in the sequence.

length :: Text -> Int

text Data.Text

O(n) Returns the number of characters in a Text. Subject to fusion.

length :: Text -> Int64

text Data.Text.Lazy

O(n) Returns the number of characters in a Text. Subject to fusion.

lengthWord16 :: Text -> Int

text Data.Text.Foreign

O(1) Return the length of a Text in units of Word16. This is useful for sizing a target array appropriately before using unsafeCopyToPtr.

genericLength :: Num i => [b] -> i

base Data.List

The genericLength function is an overloaded version of length. In particular, instead of returning an Int, it returns any type which is an instance of Num. It is, however, less efficient than length.

compareLength :: Text -> Int -> Ordering

text Data.Text

O(n) Compare the count of characters in a Text to a number. Subject to fusion. This function gives the same answer as comparing against the result of length, but can short circuit if the count of characters is greater than the number, and hence be more efficient.

compareLength :: Text -> Int64 -> Ordering

text Data.Text.Lazy

glength :: GenericQ Int

syb Data.Generics.Schemes

Count the number of immediate subterms of the given term

gregorianMonthLength :: Integer -> Int -> Int

time Data.Time.Calendar

The number of days in a given month according to the proleptic Gregorian calendar. First argument is year, second is month.

HdrContentLength :: HeaderName

HTTP Network.HTTP.Headers

julianMonthLength :: Integer -> Int -> Int

time Data.Time.Calendar.Julian