Bag<E> class

Collection type a bit like List but does not preserve the order of its entities, speedwise it is very good, especially suited for games.

Mixed-in types
Available extensions

Constructors

Bag({int capacity = 32})
Create a Bag with an initial capacity of capacity.
Bag.from(Iterable<E> iterable)
Creates a new Bag with the elements of iterable.

Properties

capacity → int
Returns the number of elements the bag can hold without growing.
no setter
first → E
The first element.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
isEmpty → bool
Returns true if this bag contains no elements.
no setteroverride
isNotEmpty → bool
Whether this collection has at least one element.
no setterinherited
iterator → Iterator<E>
A new Iterator that allows iterating the elements of this Iterable.
no setteroverride
last → E
The last element.
no setterinherited
length → int
The number of elements in this Iterable.
no setteroverride
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
single → E
Checks that this iterable has only one element, and returns that element.
no setterinherited
size → int
Returns the number of elements in this bag.
no setter

Methods

add(E element) → void
Adds the specified element to the end of this bag. If needed also increases the capacity of the bag.
addAll(Bag<E> items) → void
Add all items into this bag.
any(bool test(E element)) → bool
Checks whether any element of this iterable satisfies test.
inherited
cast<R>() → Bag<R>
A view of this iterable as an iterable of R instances.
override
clear() → void
Removes all of the elements from this bag. The bag will be empty after this call returns.
contains(Object? element) → bool
Whether the collection contains an element equal to element.
inherited
elementAt(int index) → E
Returns the indexth element.
inherited
every(bool test(E element)) → bool
Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> toElements(E element)) → Iterable<T>
Expands each element of this Iterable into zero or more elements.
inherited
firstWhere(bool test(E element), {E orElse()?}) → E
The first element that satisfies the given predicate test.
inherited
fold<T>(T initialValue, T combine(T previousValue, E element)) → T
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
inherited
followedBy(Iterable<E> other) → Iterable<E>
Creates the lazy concatenation of this iterable and other.
inherited
forEach(void action(E element)) → void
Invokes action on each element of this iterable in iteration order.
inherited
isIndexWithinBounds(int index) → bool
Returns true iff the index is within the capacity of the underlying list.
join([String separator = ""]) → String
Converts each element to a String and concatenates the strings.
inherited
lastWhere(bool test(E element), {E orElse()?}) → E
The last element that satisfies the given predicate test.
inherited
map<T>(T toElement(E e)) → Iterable<T>
The current elements of this iterable modified by toElement.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reduce(E combine(E value, E element)) → E
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
inherited
remove(E element) → bool
Removes the first occurrence of the specified element from this bag, if it is present. If the Bag does not contain the element, it is unchanged. Does this by overwriting with the last element and then removing the last element. Returns true if this list contained the specified element.
removeAt(int index) → E?
Removes the element at the specified index in this bag. Does this by overwriting with the last element and then removing the last element.
removeLast() → E?
Remove and return the last object in the bag.
singleWhere(bool test(E element), {E orElse()?}) → E
The single element that satisfies test.
inherited
skip(int count) → Iterable<E>
Creates an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(E value)) → Iterable<E>
Creates an Iterable that skips leading elements while test is satisfied.
inherited
take(int count) → Iterable<E>
Creates a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(E value)) → Iterable<E>
Creates a lazy iterable of the leading elements satisfying test.
inherited
toList({bool growable = true}) → List<E>
Creates a List containing the elements of this Iterable.
inherited
toSet() → Set<E>
Creates a Set containing the same elements as this iterable.
inherited
toString() → String
Returns a string representation of (some of) the elements of this.
inherited
where(bool test(E element)) → Iterable<E>
Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() → Iterable<T>
Creates a new lazy Iterable with all elements that have type T.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](int index) → E?
Returns the element at the specified index in the bag.
operator []=(int index, E element) → void
Sets element at specified index in the bag.