function mergeScan(accumulator, seed, concurrent) {
if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
return function (source) { return source.lift(new MergeScanOperator(accumulator, seed, concurrent)); };
function mergeScan(accumulator, seed, concurrent) {
if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
return function (source) { return source.lift(new MergeScanOperator(accumulator, seed, concurrent)); };