References

summary
public	F * map(callable: Function, iterable: Iterable): IterableIterator Applies a given callable to each of the elements of the input iterable.
public	F * pick(object: Object, iterable: Iterable): IterableIterator Yields some of the properties of the input object.
public	F * starmap(callable: Function, iterable: Iterable): Iterator Same as map but allows multiple arguments callable functions.