filter -package:base -package:text -package:unordered-containers
O(n) filter, applied to a predicate and a ByteString,
returns a ByteString containing those characters that satisfy the
predicate.
O(n) filter, applied to a predicate and a ByteString,
returns a ByteString containing those characters that satisfy the
predicate.
O(n) filter, applied to a predicate and a
ShortByteString, returns a ShortByteString containing those characters
that satisfy the predicate.
Filter all values that satisfy some predicate.
filter (> "a") (fromList [(5,"a"), (3,"b")]) == singleton 3 "b"
filter (> "x") (fromList [(5,"a"), (3,"b")]) == empty
filter (< "a") (fromList [(5,"a"), (3,"b")]) == empty
Filter all elements that satisfy some predicate.
Filter all values that satisfy the predicate.
filter (> "a") (fromList [(5,"a"), (3,"b")]) == singleton 3 "b"
filter (> "x") (fromList [(5,"a"), (3,"b")]) == empty
filter (< "a") (fromList [(5,"a"), (3,"b")]) == empty
The
filter function takes a predicate
p
and a sequence
xs and returns a sequence of those elements
which satisfy the predicate.
Filter all elements that satisfy the predicate.
Filter all keys/values that satisfy some predicate.
O(n) Drop all elements that do not satisfy the predicate.
Drop elements which do not satisfy the predicate
Drop elements which do not satisfy the predicate
O(n) Drop all elements that do not satisfy the predicate.
O(n) Drop all elements that do not satisfy the predicate.
O(n) Drop all elements that do not satisfy the predicate.
O(n) Drop all elements that do not satisfy the predicate.
Keep only values in the stream passing a given predicate.
Subject to fusion
Keep only values in the stream passing a given predicate.
Subject to fusion
Since 0.3.0
Generates a value that satisfies a predicate.
Shrinks of the generated value will also satisfy the predicate. From
the original generator's shrink tree, any values that fail the
predicate will be removed, but any subsequent shrinks that satisfy it
will be retained. Compared to
filter, shrinking may be slower
but will be optimal.
It's possible that the predicate will never pass, or will only pass at
a larger size than we're currently running at. To avoid looping
forever, we limit the number of retries, and grow the size with each
retry. If we retry too many times then the whole generator is
discarded.
Returns a tree containing only elements that match the predicate.
If the root of the tree does not match the predicate then
Nothing is returned.
Filter all values that satisfy some predicate.
filter (> "a") (fromList [(5,"a"), (3,"b")]) == singleton 3 "b"
filter (> "x") (fromList [(5,"a"), (3,"b")]) == empty
filter (< "a") (fromList [(5,"a"), (3,"b")]) == empty
Filter all elements that satisfy some predicate.