take -is:exact -package:containers -package:attoparsec
take n, applied to a list
xs, returns the
prefix of
xs of length
n, or
xs itself if
n >= length xs.
>>> take 5 "Hello World!"
"Hello"
>>> take 3 [1,2,3,4,5]
[1,2,3]
>>> take 3 [1,2]
[1,2]
>>> take 3 []
[]
>>> take (-1) [1,2]
[]
>>> take 0 [1,2]
[]
It is an instance of the more general
genericTake, in which
n may be of any integral type.
take n xs returns the first
n elements of
xs.
O(1) take n, applied to a ByteString
xs, returns the prefix of
xs of length
n,
or
xs itself if
n > length xs.
O(n/c) take n, applied to a ByteString
xs, returns the prefix of
xs of length
n,
or
xs itself if
n > length xs.
O(n) take n, applied to a ShortByteString
xs, returns the prefix of
xs of length
n,
or
xs itself if
n > length xs.
Note: copies the entire byte array
O(n) take n, applied to a
Text, returns
the prefix of the
Text of length
n, or the
Text
itself if
n is greater than the length of the Text.
O(n) take n, applied to a stream, returns the
prefix of the stream of length
n, or the stream itself if
n is greater than the length of the stream.
Properties
unstream . take n . stream = take n
O(n) take n, applied to a
Text, returns
the prefix of the
Text of length
n, or the
Text
itself if
n is greater than the length of the Text.
O(1) Yield at the first n elements without copying.
The vector may contain less than n elements, in which case it
is returned unchanged.
O(1) Yield the first n elements without copying. The
vector may contain less than n elements, in which case it is
returned unchanged.
Take the n first elements of the mutable vector without
making a copy. For negative n, the empty vector is returned.
If n is larger than the vector's length, the vector is
returned unchanged.
Take the n first elements of the mutable vector without
making a copy. For negative n, the empty vector is returned.
If n is larger than the vector's length, the vector is
returned unchanged.
O(1) Yield at the first n elements without copying.
The vector may contain less than n elements, in which case it
is returned unchanged.
Take the n first elements of the mutable vector without
making a copy. For negative n, the empty vector is returned.
If n is larger than the vector's length, the vector is
returned unchanged.
O(1) Yield at the first n elements without copying.
The vector may contain less than n elements, in which case it
is returned unchanged.
Take the n first elements of the mutable vector without
making a copy. For negative n, the empty vector is returned.
If n is larger than the vector's length, the vector is
returned unchanged.
O(1) Yield at the first n elements without copying.
The vector may contain less than n elements, in which case it
is returned unchanged.
Take the n first elements of the mutable vector without
making a copy. For negative n, the empty vector is returned.
If n is larger than the vector's length, the vector is
returned unchanged.
Stream up to n number of values downstream.
Note that, if downstream terminates early, not all values will be
consumed. If you want to force
exactly the given number of
values to be consumed, see
takeExactly.
Subject to fusion
Take some values from the stream and return as a list. If you want to
instead create a conduit that pipes data to another sink, see
isolate. This function is semantically equivalent to:
take i = isolate i =$ consume
Subject to fusion
Since 0.3.0
take n s returns the first n characters of
s. If s has less than n characters, then we
return the whole of s.
take n s returns the first n characters of
s. If s has less than n characters, then we
return the whole of s.