sort HAFAS/IRIS stations by distance

					hafas    => 1

				}

			} $hafas->results;

			if ( @hafas > 5 ) {

				@hafas = @hafas[ 0 .. 4 ];

			if ( @hafas > 10 ) {

				@hafas = @hafas[ 0 .. 9 ];

			}

			my @results = map { $_->[0] }

			  sort { $a->[1] <=> $b->[1] }

			  map { [ $_, $_->{distance} ] } ( @iris, @hafas );

			$self->render(

				json => {

					candidates => [ @iris, @hafas ],

					candidates => [@results],

				}

			);

		}