docs: public void assign(final cern.colt.function.DoubleFunction function) {
  	copy().forEachPair(
  		new cern.colt.function.IntDoubleProcedure() {
  			public boolean apply(int key, double value) {
  				put(key,function.apply(value));
  				return true;
  			}
  		}
  	);
  }