(PowerBuilder) Append New Item to JSON Array

Demonstrates the notations that can be used in a JSON array index to append to the end of an array.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Json

// Starting in Chilkat v9.5.0.77, the following notations are possible to specify that the value
// should be appended to the end of the array. (In other words, if the array currenty has N elements, then "-1", "", or "*" 
// indicate an index of N+1.

loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")
if li_rc < 0 then
    destroy loo_Json
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Json.UpdateInt("lanes[-1]",0)
loo_Json.UpdateInt("lanes[]",1)
loo_Json.UpdateInt("lanes[*]",2)
loo_Json.UpdateInt("lanes[-1]",3)

Write-Debug loo_Json.Emit()

// Output is:  {"lanes":[0,1,2,3]}


destroy loo_Json