StandardDoubleStream class
Private implementation of DoubleStream that wraps an Iterable of doubles.
This implementation provides a way to create a DoubleStream from an existing Iterable of doubles, and also provides methods for performing operations on the stream.
StandardDoubleStream is designed to be used as a private implementation of DoubleStream, and should not be used directly.
See DoubleStream for more information on using streams of doubles.
- Implemented types
Constructors
-
StandardDoubleStream(Iterable<
double> _source, [bool _parallel = false, List<void Function()> _closeHandlers = const []]) - StandardDoubleStream.empty()
-
factory
-
StandardDoubleStream.of(Iterable<
double> values) -
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
allMatch(
bool predicate(double)) → bool -
Returns
trueif all elements match the predicate.override -
anyMatch(
bool predicate(double)) → bool -
Returns
trueif any element matches the predicate.override -
average(
) → Optional< double> -
Computes and returns the average, or an empty Optional if the stream is empty.
override
-
close(
) → void -
Closes this stream, causing all close handlers for this stream pipeline
to be called.
override
-
collect(
) → List< double> -
Returns a list containing the elements of this stream.
override
-
count(
) → int -
Returns the count of elements.
override
-
distinct(
) → DoubleStream -
Returns a stream with duplicate elements removed.
override
-
dropWhile(
bool predicate(double)) → DoubleStream -
Drops elements while the predicate is
true, then returns the remainder.override -
filter(
bool predicate(double)) → DoubleStream -
Filters elements based on the given predicate.
override
-
findAny(
) → Optional< double> -
Returns any element of the stream.
override
-
findFirst(
) → Optional< double> -
Returns the first element, if available.
override
-
flatMap(
DoubleStream mapper(double)) → DoubleStream -
Flattens nested
DoubleStreams generated by the mapping function.override -
forEach(
void action(double)) → void -
Applies the provided action to each element.
override
-
forEachOrdered(
void action(double)) → void -
Applies the action to elements in encounter order.
override
-
isParallel(
) → bool -
Returns whether this stream, if a terminal operation were to be executed,
would execute in parallel.
override
-
iterable(
) → Iterable< double> -
Returns an iterable for the elements of this stream.
override
-
iterator(
) → Iterator< double> -
Returns an iterator for the elements of this stream.
override
-
limit(
int maxSize) → DoubleStream -
Limits the stream to at most
maxSizeelements.override -
map(
double mapper(double)) → DoubleStream -
Transforms each element using the provided mapping function.
override
-
mapToInt(
int mapper(double)) → IntStream -
Maps each element to an
int, returning an IntStream.override -
max(
) → Optional< double> -
Returns the maximum element or an empty Optional.
override
-
min(
) → Optional< double> -
Returns the minimum element or an empty Optional.
override
-
noneMatch(
bool predicate(double)) → bool -
Returns
trueif none match the predicate.override -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
onClose(
void closeHandler()) → DoubleStream -
Returns an equivalent stream with an additional close handler.
override
-
parallel(
) → DoubleStream -
Returns an equivalent stream that is parallel.
override
-
peek(
void action(double)) → DoubleStream -
Applies the action to each element and returns the same stream.
override
-
reduce(
double identity, double op(double, double)) → double -
Reduces the stream using the identity and associative binary operator.
override
-
reduceOptional(
double op(double, double)) → Optional< double> -
Returns an Optional reduction result.
override
-
sequential(
) → DoubleStream -
Returns an equivalent stream that is sequential.
override
-
skip(
int n) → DoubleStream -
Skips the first
nelements.override -
sorted(
) → DoubleStream -
Returns the stream sorted in natural (ascending) order.
override
-
sum(
) → double -
Sums the elements of the stream.
override
-
takeWhile(
bool predicate(double)) → DoubleStream -
Takes elements while the predicate returns
true.override -
toList(
) → List< double> -
Collects elements into a List of
double.override -
toString(
) → String -
A string representation of this object.
inherited
-
unordered(
) → DoubleStream -
Returns an equivalent stream that is unordered.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited