JUMP TODocumentationGetting StartedFunctions and lambdasWhat are "sequences"?FunctionsasFuncasEnumerablecreateeachfromArrayfromObjectrangerepeatsortsortDesctoComparerSafetoEqualityComparerSafetoPredicateSafeMethodsaggregateallanyaveragecastconcatcontainscountdefaultIfEmptydistincteachelementAtelementAtOrDefaultexceptfirstfirstOrDefaultgroupBygroupJoinintersectjoinlastlastOrDefaultmaxminofTypeorderorderByorderByDescendingorderDescendingpushToArrayreverseselectselectManysequenceEqualsinglesingleOrDefaultskipskipLastskipWhilesumtaketakeWhiletoArraythenthenBythenByDescendingthenDescendingtoObjecttoObservabletoObservableArraytoLookupunionwherezipPowered by whereFilters the elements of a sequence.JavaScript// 1, 2, 3 Enumerable.create(1, 2, 3, 4) .where('x => x < 4');