CollectionOps<T> extension

on

Properties

headOption → T?: safely access first element of list that may be empty.
no setter
lastOption → T?: safely access last element of list that may be empty.
no setter
zipWithIndex → Iterable<$<T, int>>: zip values with index
no setter

chunk(int n) → Iterable<Iterable<T>>: returns a list of list of length up to n. example
count(bool f(T)) → int: count up elements applying function f returns true.
groupBy<S>(S f(T)) → Map<S, Iterable<T>>: returns Map<S,Iterable
interspace<R extends T>(R r) → Iterable<T>: insert value between each element
slice(int from, [int? to]) → Iterable<T>: return sublist of range [from,to)
slide() → Iterable<$<T, T>>: returns a list of pairs of values slided by 1. example
sliding(int n) → Iterable<Iterable<T>>: /// returns a list of pairs of values slided by n. example
sorted([int f(T, T)?]) → Iterable<T>: returns new sorted iterable.
splitAt(int n) → $<Iterable<T>, Iterable<T>>
zip<S>(Iterable<S> t) → List<$<T, S>>: zip corresponding values with values from another iterable. If one iterable is shorter than the other, it generates iterable of shorter length.