Map
Map( array, lambda )Description
The Map function iterates on the provided array, calling the
provided lambda function repeatedly with each item in array, and
returns the results of all invocations in a new array of the same type
(an Array or Page).
As Map processes array, each invocation of the lambda function
can see the effects of write operations from previous invocations.
Examples
The following query has a Lambda which
takes one variable x, adds 1 to its value, and then returns the
incremented value. This Lambda is executed once for each value in the
array. These values are 1, 2, 3.
client.query(
q.Map([1, 2, 3], q.Lambda('x', q.Add(q.Var('x'), 1)))
)
.then((ret) => console.log(ret))[ 2, 3, 4 ]Is this article helpful?
Tell Fauna how the article can be improved:
Visit Fauna's forums
or email docs@fauna.com
Thank you for your feedback!