All tests whether f is true for every element of iter.

Any tests whether f is true for at least one element of iter.

Drop returns an Iterable that returns each element of iter after the first n elements.

DropWhile returns an Iterable that returns each element of iter after the initial sequence for which f returns true.

Filter returns an Iterable that returns the elements of iter that satisfy f.

Find returns the first element of iter that satisfies f.

Inject combines the elements of iter by repeatedly calling f with an accumulated value and each element in order.

Map returns an Iterable that returns the result of applying f to each element of iter.

Partition(iter, f) returns Filter(iter, f) and Filter(iter, !f).

TakeWhile returns an Iterable that contains elements from iter while f is true.

A Func is a function that, when called, sends the iterable values on a channel.

Injector is a type representing a function that takes two arguments, an accumulated value and an element, and returns the next accumulated value.