Function Expression

docs/app/js/sanddance-app.js:117046–117049

* Wraps an expression function with access to external parameters. * @constructor * @param {object} params - The parameters for this operator. * @param {function} params.expr - The expression function. The * function should accept both a datum and a parameter object. * This operator's value w

(params)

 *  This operator's value will be a new function that wraps the
 *  expression function with access to this operator's parameters.
 */ function Expression(params) {
    (0, _vegaDataflow.Operator).call(this, null, update$4, params);
    this.modified(true);
}
(0, _vegaUtil.inherits)(Expression, (0, _vegaDataflow.Operator));
function update$4(_) {
    const expr = _.expr;