OB Keys

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4D v20.1

OB Keys


OB Keys ( object ) -> Function result

Parameter	Type	Description
object	Object	Object to return property names
Function result	Collection	Collection of property names (strings)

Description

The OB Keys command returns a collection of strings containing all of the enumerable property names of the object.

Only first-level property names are returned (property names of sub-objects are not returned). The order of names within the returned collection follows the definition order of the properties.

Example

You want a collection with all first-level property names of an object:

 C_OBJECT($person)

 C_COLLECTION($col)

 

 $person:=New object

 $person.lastName:="Smith"

 $person.firstName:="Jenny"

 $person.children:=New object("Mary";12;"Mark";8)

 

 $col:=OB Keys($person)

 

  //$col[0]="lastName"

  //$col[1]="firstName"

  //$col[2]="children"