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- 4D Language Reference
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- Objects (Language)
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Structure of 4D language objects
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Using object notation
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Shared objects and shared collections
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New object
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New shared object
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OB Class
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OB Copy
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OB Entries
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OB Get
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OB GET ARRAY
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OB GET PROPERTY NAMES
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OB Get type
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OB Instance of
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OB Is defined
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OB Is empty
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OB Is shared
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OB Keys
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OB REMOVE
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OB SET
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OB SET ARRAY
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OB SET NULL
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OB Values
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Storage
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OB Get type
| OB Get type ( object ; property ) -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| object | Object |
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Structured object | |||||
| property | Text |
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Property name | |||||
| Function result | Longint |
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Property value type | |||||
The OB Get type command returns the type of value associated with the property of the language object.
object must have been defined using the _O_C_OBJECT command or designate a 4D object field.
In the property parameter, pass the label of the property whose type you want to find out.
Note that the property parameter is case sensitive.
The command returns a longint indicating the type of value. You can compare this value with the following constants, found in the "Field and Variable Types" theme:
| Constant | Type | Value |
| Is Boolean | Longint | 6 |
| Is collection | Longint | 42 |
| Is date | Longint | 4 |
| Is null | Longint | 255 |
| Is object | Longint | 38 |
| Is real | Longint | 1 |
| Is text | Longint | 2 |
| Is undefined | Longint | 5 |
Note: For picture attributes, the command returns Is object.
We want to get the type of standard values:
C_OBJECT($ref)
OB SET($ref;"name";"smith";"age";42)
$type:=OB Get type($ref;"name") //$type returns 2
$type2:=OB Get type($ref;"age") //$type2 returns 1
Product: 4D
Theme: Objects (Language)
Number:
1230
Created: 4D v14
Modified: 4D v15
Modified: 4D v16 R4
Modified: 4D v16 R6
4D Language Reference ( 4D v20 R7)
