Set
Set methods and properties.
Description
A Set represents a group of values, for example, documents in a Collection. When a Set is returned from a query, it is materialized into a page of results that includes a subset of the Set with a pagination cursor.
Some set methods have lazy loading, as opposed to eager loading, in that
they compute the result when the data is needed instead of instantly.
Eager methods return a result set instantly. Lazy methods return a result
set when the query forces the set to be materialized. See the individual
method description for whether it is lazy loading or not. For
distinct()
and order()
the full set is read
to get the distinct and ordered version when a page on the set is materialized.
Static methods
Instance methods
Method | Description |
---|---|
Aggregate all the elements in the set. |
|
Test if any element passes the test of the given function. |
|
Get the number of values in a Set. |
|
Get unique elements. |
|
Drop elements given a count. |
|
Test if every set element passes the given function test. |
|
Get the first value in the Set. |
|
Get the first matching value from the Set. |
|
Call the reducer for every element of an set, using a seed as the first input to the reducer. |
|
Collapse elements in the set, traversing right to left, give a reducer. |
|
Iterate over all values in a Set, executing a function on each value. |
|
Test if the set includes the given value. |
|
Test if the set is empty. |
|
Get the last element in a set. |
|
Get the last element that matches the given predicate. |
|
Test if the set is empty. |
|
Modifies the rendered page size of a Set in a query result. |
|
Apply a reducer Function to each set element, from right to left, to get a single value. |
|
Reverse the order of the set elements. |
|
Get a subset of matching Set values. |
|
Convert a set to a String representation. |
|
Get the next or previous page of Set values that correspond to a previously acquired pagination token. |
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