Terminal Operations

all_match() : Check if all elements match a predicate

Returns whether all elements of this stream match the provided predicate.

Stream.of([1, 2, 3]) \
    .all_match(lambda x: x > 0) # True

any_match() : Check if any element matches a predicate

Returns whether any elements of this stream match the provided predicate.

Stream.of([1, 2, 3]) \
    .any_match(lambda x: x < 0) # False

count() : Count the number of elements in the Stream

Returns the number of elements in this stream.

Stream.of([1, 2, 3]) \
    .count() # 3

find_any() : Find an element in the Stream

Returns an Optional describing an arbitrary element of this stream, or an empty Optional if the stream is empty.

Stream.of([1, 2, 3]) \
    .find_any() # Optional[1]

find_first() : Find the first element in the Stream

Returns an Optional describing the first element of this stream, or an empty Optional if the stream is empty.

Stream.of([1, 2, 3]) \
    .find_first() # Optional[1]

for_each() : Perform an action for each element in the Stream

Performs the provided action for each element of this stream.

Stream.of([1, 2, 3]) \
    .for_each(print) # 1 2 3

none_match() : Check if no element matches a predicate

Returns whether no elements of this stream match the provided predicate.

Stream.of([1, 2, 3]) \
    .none_match(lambda x: x < 0) # True

min() : Find the minimum element in the Stream

Returns the minimum element of this stream

Stream.of([1, 2, 3]) \
    .min() # 1

max() : Find the maximum element in the Stream

Returns the maximum element of this stream

Stream.of([1, 2, 3]) \
    .max() # 3

reduce() : Reduce the Stream to a single value

Returns the result of reducing the elements of this stream to a single value using the provided reducer.

Stream.of([1, 2, 3]) \
    .reduce(lambda x, y: x + y) # 6

to_dict() : Convert the Stream to a dictionary

Returns a dictionary containing the elements of this stream by applying the given classifier.

Stream.of([(1, 2), (1, 6), (2, 3), (2, 8), (3, 0)]) \
    .to_dict(lambda p: p[0]) # {1: [(1, 2), (1, 6)], 2: [(2, 3), (2, 8)], 3: [(3, 0)]}

to_list() : Convert the Stream to a List

Returns a list containing the elements of this stream.

Stream.of([1, 2, 3]) \
    .to_list() # [1, 2, 3]

to_set() : Convert the Stream to a Set

Returns a set containing the elements of this stream.

Stream.of([1, 2, 3]) \
    .to_set() # {1, 2, 3}

to_tuple() : Convert the Stream to a Tuple

Returns a tuple containing the elements of this stream.

Stream.of([1, 2, 3]) \
    .to_tuple() # (1, 2, 3)