IterableExtensions<T> extension

Common iterable extensions

on

• Iterable<T>

Properties

unique → List<T>

Available on Iterable<T>, provided by the IterableExtensions extension

Returns a new list containing the unique elements from the original iterable.

no setter

Methods

averageBy(num selector(T)) → num

Available on Iterable<T>, provided by the IterableExtensions extension

Calculates the average value of all elements in the iterable by mapping them to numeric values.

count(bool test(T element)) → int

Available on Iterable<T>, provided by the IterableExtensions extension

Counts the number of elements that satisfy the test.

distinctBy(Object? selector(T e)) → List<T>

Available on Iterable<T>, provided by the IterableExtensions extension

Returns a list of unique elements based on a selector function.

firstWhereOrNull(bool test(T)) → T?

Available on Iterable<T>, provided by the IterableExtensions extension

Tries to find the first element in the iterable that matches the given test. Returns null if no such element is found.

forEachIndexed(void f(int index, T element)) → void

Available on Iterable<T>, provided by the IterableExtensions extension

Iterates through the iterable with both index and element.

groupBy<K>(K keyFunction(T)) → Map<K, List<T>>

Available on Iterable<T>, provided by the IterableExtensions extension

Groups the elements in the iterable according to the keyFunction. Returns a map where each key corresponds to a list of elements that share that key.

mapIndexed<E>(E f(int index, T element)) → Iterable<E>

Available on Iterable<T>, provided by the IterableExtensions extension

Maps each element along with its index to a new value.

mapToList<E>(E convert(T)) → List<E>

Available on Iterable<T>, provided by the IterableExtensions extension

Converts the iterable to a list using a convert function for each element.

sumBy(num selector(T)) → num

Available on Iterable<T>, provided by the IterableExtensions extension

Calculates the sum of all elements in the iterable by mapping them to numeric values.

whereIndexed(bool test(int index, T element)) → Iterable<T>

Available on Iterable<T>, provided by the IterableExtensions extension

Returns a new iterable containing elements that satisfy the test with their index.

windowed(int size, {int step = 1, bool partialWindows = false}) → Iterable<List<T>>

Available on Iterable<T>, provided by the IterableExtensions extension

Returns a sliding window of a given size and optional step.

zip(Iterable other) → Iterable<List>

Available on Iterable<T>, provided by the IterableExtensions extension

Zips this iterable with another other iterable.