Returns a new lazy Iterable with elements that are created by calling
f on each element of this
Iterable in iteration order.
This method returns a view of the mapped elements. As long as the returned Iterable is not iterated over, the supplied function
f will not be invoked. The transformed elements will not be cached. Iterating multiple times over the returned Iterable will invoke the supplied function
f multiple times on the same element.
Methods on the returned iterable are allowed to omit calling
f on any element where the result isn't needed. For example, elementAt may call
f only once.
Iterable<T> map<T>(T f(E e)) => MappedIterable<E, T>(this, f);
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