IsInteger

Not available in this language yet.
IsInteger( value )
IsInteger( value )
IsInteger( value )
Not available in this language yet.
IsInteger( value )

Description

The IsInteger function returns true only if value is an integer number, otherwise it returns false.

Parameters

Argument Type Definition and Requirements

value

Any

Any value, which is to be tested to determine whether it is an integer number or not.

Returns

Returns a boolean, indicating whether value was an integer number 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 IsInteger 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"),
      "IsInteger": f.IsInteger(f.Var("x")),
    })))

if (err != nil) {
  fmt.Println(err)
} else {
  fmt.Println(result)
}
[map[IsInteger:false value:[array]] map[IsInteger:false value:true] map[IsInteger:false value:false] map[IsInteger:false value:[1 2 3 4]] map[IsInteger:false value:[1 2 3 4]] map[IsInteger:false value:{Letters 0xc00008e330 0xc00008e330 <nil>}] map[IsInteger:false value:{264354436692836874 0xc00008e450 0xc00008e450 <nil>}] map[IsInteger:false value:{child_db 0xc00008e570 0xc00008e570 <nil>}] map[IsInteger:false value:{0 63709113600 <nil>}] map[IsInteger:false value:{123 0xc00008e780 0xc00008e780 <nil>}] map[IsInteger:false value:10.1] map[IsInteger:false value:{double 0xc00008e8d0 0xc00008e8d0 <nil>}] map[IsInteger:false value:{all_letters 0xc00008e9f0 0xc00008e9f0 <nil>}] map[IsInteger:true value:10] map[IsInteger:false value:{248967241620521472 0xc00008eb40 0xc00008eb40 <nil>}] map[IsInteger: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[IsInteger:false value:{}] map[IsInteger:false value:{}] map[IsInteger:false value:map[x:10]] map[IsInteger:false value:{employees 0xc00008ed50 0xc00008ed50 <nil>}] map[IsInteger:false value:{map[match:{all_letters 0xc00008eea0 0xc00008eea0 <nil>}]}] map[IsInteger:false value:ten] map[IsInteger:false value:10] map[IsInteger:false value:{632147000 63724302420 <nil>}] map[IsInteger:false value:{249062079147803136 0xc00008f050 0xc00008f050 <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"), "IsInteger", IsInteger(Var("x")))
            )
        )
    ).get());
[{value: ["array"], IsInteger: false},
 {value: true, IsInteger: false},
 {value: false, IsInteger: false},
 {value: [0x01 0x02 0x03 0x04], IsInteger: false},
 {value: [1, 2, 3, 4], IsInteger: false},
 {value: ref(id = "Letters", collection = ref(id = "collections")),
  IsInteger: false},
 {value: ref(id = "248967019900174848", collection = ref(id = "credentials")),
  IsInteger: false},
 {value: ref(id = "child_db", collection = ref(id = "databases")),
  IsInteger: false},
 {value: 2019-11-12, IsInteger: false},
 {value: ref(id = "123", collection = ref(id = "Letters", collection = ref(id = "collections"))),
  IsInteger: false},
 {value: 10.1, IsInteger: false},
 {value: ref(id = "double", collection = ref(id = "functions")),
  IsInteger: false},
 {value: ref(id = "all_letters", collection = ref(id = "indexes")),
  IsInteger: false},
 {value: 10, IsInteger: true},
 {value: ref(id = "248967241620521472", collection = ref(id = "keys")),
  IsInteger: false},
 {value: QueryV({lambda=x, expr={var=x}}), IsInteger: false},
 {value: null, IsInteger: false},
 {value: {x: 10}, IsInteger: false},
 {value: ref(id = "employees", collection = ref(id = "roles")),
  IsInteger: false},
 {value: {@set = {match: ref(id = "all_letters", collection = ref(id = "indexes"))}},
  IsInteger: false},
 {value: "ten", IsInteger: false},
 {value: "10", IsInteger: false},
 {value: 2019-11-12T13:15:16.789Z, IsInteger: false},
 {value: ref(id = "249062079147803136", collection = ref(id = "tokens")),
  IsInteger: 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'),
      IsInteger: q.IsInteger(q.Var('x')),
    })
  )
)
.then((ret) => console.log(ret))
[ { value: [ 'array' ], IsInteger: false },
  { value: true, IsInteger: false },
  { value: false, IsInteger: false },
  { value: Bytes("AQIDBA=="), IsInteger: false },
  { value: [ 1, 2, 3, 4 ], IsInteger: false },
  { value: Collection("Letters"), IsInteger: false },
  { value: Ref(Credentials(), "248967019900174848"),
    IsInteger: false },
  { value: Database("child_db"), IsInteger: false },
  { value: Date("2019-11-12"), IsInteger: false },
  { value: Ref(Collection("Letters"), "123"), IsInteger: false },
  { value: 10.1, IsInteger: false },
  { value: Function("double"), IsInteger: false },
  { value: Index("all_letters"), IsInteger: false },
  { value: 10, IsInteger: true },
  { value: Ref(Keys(), "248967241620521472"), IsInteger: false },
  { value: Query(Lambda("x", Var("x"))), IsInteger: false },
  { value: null, IsInteger: false },
  { value: { x: 10 }, IsInteger: false },
  { value: Role("employees"), IsInteger: false },
  { value: Match(Index("all_letters")), IsInteger: false },
  { value: 'ten', IsInteger: false },
  { value: '10', IsInteger: false },
  { value: Time("2019-11-12T13:15:16.789Z"), IsInteger: false },
  { value: Ref(Tokens(), "249062079147803136"), IsInteger: 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"), "IsInteger" -> IsInteger(Var("x")))
      )
    )
  ),
  5.seconds
))
[{value: ["array"], IsInteger: false},
 {value: true, IsInteger: false},
 {value: false, IsInteger: false},
 {value: [0x01 0x02 0x03 0x04], IsInteger: false},
 {value: [1, 2, 3, 4], IsInteger: false},
 {value: ref(id = "Letters", collection = ref(id = "collections")),
  IsInteger: false},
 {value: ref(id = "248967019900174848", collection = ref(id = "credentials")),
  IsInteger: false},
 {value: ref(id = "child_db", collection = ref(id = "databases")),
  IsInteger: false},
 {value: 2019-11-12, IsInteger: false},
 {value: ref(id = "123", collection = ref(id = "Letters", collection = ref(id = "collections"))),
  IsInteger: false},
 {value: 10.1, IsInteger: false},
 {value: ref(id = "double", collection = ref(id = "functions")),
  IsInteger: false},
 {value: ref(id = "all_letters", collection = ref(id = "indexes")),
  IsInteger: false},
 {value: 10, IsInteger: true},
 {value: ref(id = "248967241620521472", collection = ref(id = "keys")),
  IsInteger: false},
 {value: {lambda: "x", expr: {var: "x"}}, IsInteger: false},
 {value: NullV, IsInteger: false},
 {value: {x: 10}, IsInteger: false},
 {value: ref(id = "employees", collection = ref(id = "roles")),
  IsInteger: false},
  {value: {@set = {match: ref(id = "all_letters", collection = ref(id = "indexes"))}},
  IsInteger: false},
 {value: "ten", IsInteger: false},
 {value: "10", IsInteger: false},
 {value: 2019-11-12T13:15:16.789Z, IsInteger: false},
 {value: ref(id = "249062079147803136", collection = ref(id = "tokens")),
  IsInteger: 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 Login (not shown here), so that Ref("credentials/self") returns a valid value.

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