Push.. and PopMapPosition() doesn't work with FindMapElement
Posted: Sat Apr 10, 2021 9:07 am
PopMapPosition() doesn't restore the previous MapElement after using FindMapElement().
Code example:
Output:
It doesn't explicitly say in the help that you can use this together with FindMapElement(), but I don't understand why it matters how the pointer to the current MapElement was changed.
I thought until now that the value of the map pointer is simply pushed onto the stack and later taken down again to restore the current map pointer with it.
Markus
Code example:
Code: Select all
EnableExplicit
Define.s sCurrentID, sCurrentValue, sAnotherValue
NewMap Numbers.s()
Numbers("1") = "I am 1"
Numbers("2") = "I am 2"
Numbers("3") = "I am 3"
Numbers("4") = "I am 4"
Numbers("5") = "I am 5"
sCurrentID = "3"
If FindMapElement(Numbers(), sCurrentID)
sCurrentValue = Numbers()
Debug "Current value: " + sCurrentValue
PushMapPosition(Numbers())
FindMapElement(Numbers(), "5")
sAnotherValue = Numbers()
Debug "Another value: " + sAnotherValue
PopMapPosition(Numbers())
sCurrentValue = Numbers()
Debug "Back to current value: " + sCurrentValue
Debug "Should be 'I am 3', but is still 'I am 5'"
EndIf
Code: Select all
Current value: I am 3
Another value: I am 5
Back to current value: I am 5
Should be 'I am 3', but is still 'I am 5'I thought until now that the value of the map pointer is simply pushed onto the stack and later taken down again to restore the current map pointer with it.
Markus