IsEmpty
IsEmpty( collection )
IsEmpty( collection )
IsEmpty( collection )
IsEmpty( collection )
is_empty( collection )
is_empty( collection )
IsEmpty( collection )
IsEmpty( collection )
Parameters
Argument | Type | Definition and Requirements |
---|---|---|
|
An array which is checked for the non-existence of elements. |
Examples
The query below executes an array of independent IsEmpty
operations
and returns the results in an array. The result array position matches
the execution array position. The first IsEmpty
operation operates on
an empty array and places the result of true in the top position in the
result array. The second IsEmpty
operation operates on an array with a
single value of 1 and places the result of false in the second position
in the result array. The third IsEmpty
operation operates on an array
with a two values and places the result of false
in the third position
in the result array.
client.Query(
Arr(
IsEmpty(Arr()),
IsEmpty(Arr(Value(1))),
IsEmpty(Arr(Value(1), Value(2), Value(3)))
)
)
System.out.println(
client.query(
Arr(
IsEmpty(Arr()),
IsEmpty(Arr(Value(1))),
IsEmpty(Arr(Value(1), Value(2), Value(3)))
)
).get());
result, err := client.Query(
f.Arr{
f.IsEmpty(f.Arr{}),
f.IsEmpty(f.Arr{1}),
f.IsEmpty(f.Arr{1, 2, 3})})
if (err != nil) {
fmt.Println(err)
} else {
fmt.Println(result)
}
System.out.println(
client.query(
Arr(
IsEmpty(Arr()),
IsEmpty(Arr(Value(1))),
IsEmpty(Arr(Value(1), Value(2), Value(3)))
)
).get());
client.query([
q.IsEmpty([]),
q.IsEmpty([1]),
q.IsEmpty([1, 2, 3])
]).then((ret) => console.log(ret))
.catch((err) => console.log(err))
result = client.query([
q.is_empty([]),
q.is_empty([1]),
q.is_empty([1, 2, 3]),
])
print(result)
puts $client.query {[
is_empty([]),
is_empty([1]),
is_empty([1, 2, 3]),
]}
println(Await.result(
client.query(Arr(
IsEmpty(Arr()),
IsEmpty(Arr(1)),
IsEmpty(Arr(1, 2, 3))
)),
5.seconds
))
client.query(
Arr(
IsEmpty(Arr()),
IsEmpty(Arr(Value(1))),
IsEmpty(Arr(Value(1), Value(2), Value(3)))
)
)
[true, false, false]
[true, false, false]
[true false false]
[true, false, false]
[ true, false, false ]
[True, False, False]
true
false
false
[true, false, false]
[true, false, false]
Was this article helpful?
We're sorry to hear that.
Tell us how we can improve!
documentation@fauna.com
Thank you for your feedback!