last -package:relude
Extract the last element of a list, which must be finite
and non-empty.
WARNING: This function is partial. Consider using
unsnoc
instead.
Examples
>>> last [1, 2, 3]
3
>>> last [1..]
* Hangs forever *
>>> last []
*** Exception: Prelude.last: empty list
The last element of a non-empty structure.
>>> last (1 :| [2, 3, 4])
4
Extract the last element of the stream.
O(1) Extract the last element of a ByteString, which must be
finite and non-empty. An exception will be thrown in the case of an
empty ByteString.
This is a partial function, consider using
unsnoc instead.
O(1) Extract the last element of a packed string, which must be
non-empty.
O(n/c) Extract the last element of a ByteString, which must be
finite and non-empty.
This is a partial function, consider using
unsnoc instead.
O(1) Extract the last element of a ShortByteString, which must
be finite and non-empty. An exception will be thrown in the case of an
empty ShortByteString.
This is a partial function, consider using
unsnoc instead.
O(1) Returns the last character of a
Text, which must be
non-empty. This is a partial function, consider using
unsnoc
instead.
O(n/c) Returns the last character of a
Text, which must
be non-empty. This is a partial function, consider using
unsnoc
instead.
Retrieve the last value in the stream, if present.
Subject to fusion
Extract the last element of a list, which must be finite
and non-empty.
>>> last [1, 2, 3]
3
>>> last [1..]
* Hangs forever *
>>> last []
*** Exception: Prelude.last: empty list
WARNING: This function is partial. You can use
reverse with
case-matching,
uncons or
listToMaybe instead.
Retrieve the last element from a
Producer
Get the last element of a container or return
Nothing if the
container is empty
Get the last byte of a byte stream or return
Nothing if the
byte stream is empty
Get the last element of a non-empty container
Get the last character of a text stream or return
Nothing if
the text stream is empty
O(n/c) Extract the last element of a ByteString, which must be
finite and non-empty.
O(1) Extract the last element of a ByteString, which must be
finite and non-empty. An exception will be thrown in the case of an
empty ByteString.
Extract the last element of a list, which must be finite
and non-empty.
O(n/c) Returns the last character of a
Text, which must
be non-empty. Subject to fusion.
O(1) Returns the last character of a
Text, which must be
non-empty. Subject to fusion.