length
Returns the size/length of a finite structure as an
Int. The
default implementation just counts elements starting with the
left-most. Instances for structures that can compute the element count
faster than via element-by-element counting, should provide a
specialised implementation.
Examples
Basic usage:
>>> length []
0
>>> length ['a', 'b', 'c']
3
>>> length [1..]
* Hangs forever *
length returns the length of a finite list as an
Int. It is an instance of the more general
genericLength, the result type of which may be any kind of
number.
>>> length []
0
>>> length ['a', 'b', 'c']
3
>>> length [1..]
* Hangs forever *
O(1) length returns the length of a ByteString as an
Int.
O(c) length returns the length of a ByteString as an
Int64
The number of elements in the sequence.
O(n) Returns the number of characters in a
Text. Subject
to fusion.
O(n) Returns the number of characters in a text.
O(n) Returns the number of characters in a
Text. Subject
to fusion.
O(1) Yield the length of the vector
O(1) Yield the length of the vector
Length of the mutable vector.
Length of the mutable vector.
O(1) Yield the length of the vector
Length of the mutable vector.
O(1) Yield the length of the vector
Length of the mutable vector.
O(1) Yield the length of the vector
Length of the mutable vector.