IsObject
Not available in this language yet.IsObject( value )IsObject( value )IsObject( value )Not available in this language yet.IsObject( value )Description
The IsObject function returns true only if value is an
Object, otherwise it returns false.
Parameters
| Argument | Type | Definition and Requirements |
|---|---|---|
|
Any |
Any value, which is to be tested to determine whether it is an object or not. |
Examples
The following query uses Map to iterate
over an array of all of the types of values that can be tested by a
type-check function, passing each item into a
Lambda function that returns an
object, which contains the value and the result of calling IsObject
with that value:
Not available in this language yet.result, err := client.Query(
f.Map(
f.Arr{
f.Arr{"array"},
true,
false,
f.BytesV{0x01, 0x02, 0x03, 0x04},
f.Arr{0x1, 0x2, 0x3, 0x4},
f.Collection("Letters"),
f.Ref("credentials/self"),
f.Database("child_db"),
f.Date("2019-11-12"),
f.RefCollection(f.Collection("Letters"), 123),
10.1,
f.Function("double"),
f.Index("all_letters"),
10,
f.RefCollection(f.Keys(), "248967241620521472"),
f.Query(f.Lambda("x", f.Var("x"))),
nil,
f.Null(),
f.Obj{ "x": 10 },
f.Role("employees"),
f.Match(f.Index("all_letters")),
"ten",
"10",
f.Now(),
f.RefCollection(f.Tokens(), "249062079147803136"),
},
f.Lambda("x", f.Obj{
"value": f.Var("x"),
"IsObject": f.IsObject(f.Var("x")),
})))
if (err != nil) {
fmt.Println(err)
} else {
fmt.Println(result)
}[map[IsObject:false value:[array]] map[IsObject:false value:true] map[IsObject:false value:false] map[IsObject:false value:[1 2 3 4]] map[IsObject:false value:[1 2 3 4]] map[IsObject:false value:{Letters 0xc0004a9800 0xc0004a9800 <nil>}] map[IsObject:false value:{264354436692836874 0xc0004a9920 0xc0004a9920 <nil>}] map[IsObject:false value:{child_db 0xc0004a9a40 0xc0004a9a40 <nil>}] map[IsObject:false value:{0 63709113600 <nil>}] map[IsObject:false value:{123 0xc0004a9c50 0xc0004a9c50 <nil>}] map[IsObject:false value:10.1] map[IsObject:false value:{double 0xc0004a9da0 0xc0004a9da0 <nil>}] map[IsObject:false value:{all_letters 0xc0004a9ec0 0xc0004a9ec0 <nil>}] map[IsObject:false value:10] map[IsObject:false value:{248967241620521472 0xc00044a030 0xc00044a030 <nil>}] map[IsObject:false value:{[123 34 108 97 109 98 100 97 34 58 34 120 34 44 34 101 120 112 114 34 58 123 34 118 97 114 34 58 34 120 34 125 125]}] map[IsObject:false value:{}] map[IsObject:false value:{}] map[IsObject:true value:map[x:10]] map[IsObject:false value:{employees 0xc00044a240 0xc00044a240 <nil>}] map[IsObject:false value:{map[match:{all_letters 0xc00044a390 0xc00044a390 <nil>}]}] map[IsObject:false value:ten] map[IsObject:false value:10] map[IsObject:false value:{565703000 63724302550 <nil>}] map[IsObject:false value:{249062079147803136 0xc00044a540 0xc00044a540 <nil>}]]System.out.println(
client.query(
Map(
Arr(
Arr(Value("array")),
Value(true),
Value(false),
Value(new byte[] {0x1, 0x2, 0x3, 0x4}),
Arr(Value(0x1), Value(0x2), Value(0x3), Value(0x4)),
Collection("Letters"),
Ref("credentials/self"),
Database("child_db"),
Date("2019-11-12"),
Ref(Collection("Letters"), "123"),
Value(10.1),
Function("double"),
Index("all_letters"),
Value(10),
Ref(Keys(), "248967241620521472"),
Query(Lambda("x", Var("x"))),
Null(),
Obj("x", Value(10)),
Role("employees"),
Match(Index("all_letters")),
Value("ten"),
Value("10"),
Now(),
Ref(Tokens(), "249062079147803136")
),
Lambda(
"x",
Obj("value", Var("x"), "IsObject", IsObject(Var("x")))
)
)
).get());[{value: ["array"], IsObject: false},
{value: true, IsObject: false},
{value: false, IsObject: false},
{value: [0x01 0x02 0x03 0x04], IsObject: false},
{value: [1, 2, 3, 4], IsObject: false},
{value: ref(id = "Letters", collection = ref(id = "collections")),
IsObject: false},
{value: ref(id = "248967019900174848", collection = ref(id = "credentials")),
IsObject: false},
{value: ref(id = "child_db", collection = ref(id = "databases")),
IsObject: false},
{value: 2019-11-12, IsObject: false},
{value: ref(id = "123", collection = ref(id = "Letters", collection = ref(id = "collections"))),
IsObject: false},
{value: 10.1, IsObject: false},
{value: ref(id = "double", collection = ref(id = "functions")),
IsObject: false},
{value: ref(id = "all_letters", collection = ref(id = "indexes")),
IsObject: false},
{value: 10, IsObject: false},
{value: ref(id = "248967241620521472", collection = ref(id = "keys")),
IsObject: false},
{value: QueryV({lambda=x, expr={var=x}}), IsObject: false},
{value: null, IsObject: false},
{value: {x: 10}, IsObject: true},
{value: ref(id = "employees", collection = ref(id = "roles")),
IsObject: false},
{value: {@set = {match: ref(id = "all_letters", collection = ref(id = "indexes"))}},
IsObject: false},
{value: "ten", IsObject: false},
{value: "10", IsObject: false},
{value: 2019-11-12T13:15:16.789Z, IsObject: false},
{value: ref(id = "249062079147803136", collection = ref(id = "tokens")),
IsObject: false}]client.query(
q.Map(
[
['array'],
true,
false,
new Uint8Array([1, 2, 3, 4]),
[0x1, 0x2, 0x3, 0x4],
q.Collection('Letters'),
q.Ref('credentials/self'),
q.Database('child_db'),
q.Date('2019-11-12'),
q.Ref(q.Collection('Letters'), 123),
10.1,
q.Function('double'),
q.Index('all_letters'),
10,
q.Ref(q.Keys(), '248967241620521472'),
q.Query(q.Lambda('x', q.Var('x'))),
null,
{ x: 10 },
q.Role('employees'),
q.Match(q.Index('all_letters')),
'ten',
'10',
q.Now(),
q.Ref(q.Tokens(), '249062079147803136'),
],
q.Lambda('x', {
value: q.Var('x'),
IsObject: q.IsObject(q.Var('x')),
})
)
)
.then((ret) => console.log(ret))[ { value: [ 'array' ], IsObject: false },
{ value: true, IsObject: false },
{ value: false, IsObject: false },
{ value: Bytes("AQIDBA=="), IsObject: false },
{ value: [ 1, 2, 3, 4 ], IsObject: false },
{ value: Collection("Letters"), IsObject: false },
{ value: Ref(Credentials(), "248967019900174848"),
IsObject: false },
{ value: Database("child_db"), IsObject: false },
{ value: Date("2019-11-12"), IsObject: false },
{ value: Ref(Collection("Letters"), "123"), IsObject: false },
{ value: 10.1, IsObject: false },
{ value: Function("double"), IsObject: false },
{ value: Index("all_letters"), IsObject: false },
{ value: 10, IsObject: false },
{ value: Ref(Keys(), "248967241620521472"), IsObject: false },
{ value: Query(Lambda("x", Var("x"))), IsObject: false },
{ value: null, IsObject: false },
{ value: { x: 10 }, IsObject: true },
{ value: Role("employees"), IsObject: false },
{ value: Match(Index("all_letters")), IsObject: false },
{ value: 'ten', IsObject: false },
{ value: '10', IsObject: false },
{ value: Time("2019-11-12T13:15:16.789Z"), IsObject: false },
{ value: Ref(Tokens(), "249062079147803136"), IsObject: false } ]Not available in this language yet.println(Await.result(
client.query(
Map(
Arr(
Arr("array"),
true,
false,
BytesV(0x1, 0x2, 0x3, 0x4),
Arr(0x1, 0x2, 0x3, 0x4),
Collection("Letters"),
Ref("credentials/self"),
Database("child_db"),
Date("2019-11-12"),
Ref(Collection("Letters"), 123),
10.1,
Function("double"),
Index("all_letters"),
10,
Ref(Keys(), "248967241620521472"),
Query(Lambda("x", Var("x"))),
Null,
Obj("x" -> 10),
Role("employees"),
Match(Index("all_letters")),
"ten",
"10",
Now(),
Ref(Tokens(), "249062079147803136")
),
Lambda(
"x",
Obj( "value" -> Var("x"), "IsObject" -> IsObject(Var("x")))
)
)
),
5.seconds
))[{value: ["array"], IsObject: false},
{value: true, IsObject: false},
{value: false, IsObject: false},
{value: [0x01 0x02 0x03 0x04], IsObject: false},
{value: [1, 2, 3, 4], IsObject: false},
{value: ref(id = "Letters", collection = ref(id = "collections")),
IsObject: false},
{value: ref(id = "248967019900174848", collection = ref(id = "credentials")),
IsObject: false},
{value: ref(id = "child_db", collection = ref(id = "databases")),
IsObject: false},
{value: 2019-11-12, IsObject: false},
{value: ref(id = "123", collection = ref(id = "Letters", collection = ref(id = "collections"))),
IsObject: false},
{value: 10.1, IsObject: false},
{value: ref(id = "double", collection = ref(id = "functions")),
IsObject: false},
{value: ref(id = "all_letters", collection = ref(id = "indexes")),
IsObject: false},
{value: 10, IsObject: false},
{value: ref(id = "248967241620521472", collection = ref(id = "keys")),
IsObject: false},
{value: {lambda: "x", expr: {var: "x"}}, IsObject: false},
{value: NullV, IsObject: false},
{value: {x: 10}, IsObject: true},
{value: ref(id = "employees", collection = ref(id = "roles")),
IsObject: false},
{value: {@set = {match: ref(id = "all_letters", collection = ref(id = "indexes"))}},
IsObject: false},
{value: "ten", IsObject: false},
{value: "10", IsObject: false},
{value: 2019-11-12T13:15:16.789Z, IsObject: false},
{value: ref(id = "249062079147803136", collection = ref(id = "tokens")),
IsObject: false}]|
This query operates on a pre-existing schema, which is not provided here. Also, the query is executed via a client connection,
that uses a secret acquired by calling
|
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!