Function Pulse

docs/app/js/sanddance-app.js:108024–108032

* A Pulse enables inter-operator communication during a run of the * dataflow graph. In addition to the current timestamp, a pulse may also * contain a change-set of added, removed or modified data tuples, as well as * a pointer to a full backing data source. Tuple change sets may not * be fully

(dataflow, stamp, encode)

 *   setting as appropriate. This parameter can be used in conjunction with
 *   the Encode transform in the vega-encode module.
 */ function Pulse(dataflow, stamp, encode) {
    this.dataflow = dataflow;
    this.stamp = stamp == null ? -1 : stamp;
    this.add = [];
    this.rem = [];
    this.mod = [];
    this.fields = null;
    this.encode = encode || null;
}
function materialize(data, filter5) {
    const out = [];
    (0, _vegaUtil.visitArray)(data, filter5, (_)=>out.push(_));