Method SumFn

src/com/winvector/opt/impl/SumFn.java:17–20

(final Iterable<VectorFn> underlying)

	private final int dim;
	
	public SumFn(final Iterable<VectorFn> underlying) {
		this.underlying = underlying;
		dim = underlying.iterator().next().dim();
	}

	@Override
	public int dim() {