Singleton
Singleton( ref )
Singleton( ref )
singleton( ref )
Singleton( ref )
Description
The Singleton
function produces a set containing the Reference that
you provide.
In most cases, functions cast References into sets when necessary. The
only case where Singleton
is required is to return a set’s events
rather than a Reference’s events.
Parameters
Parameter | Type | Definition and Requirements |
---|---|---|
|
Reference |
A reference to a resource, such as a document, collection, database, etc. |
Examples
The following query creates a single-item set from the provided ref
:
{map[singleton:{233555580689580553 0xc00009b410 0xc00009b410 <nil>}]}
Singleton(Ref(Collection("posts"), "233286601218720256"))
SetRef({'singleton': Ref(id=233286601218720256, collection=Ref(id=posts, collection=Ref(id=collections)))})
Singleton(Ref(Collection("posts"), "233286601218720256"))
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