[SOLVED] How to dynamically access object properties ? i.e : myObj[‘aProp’] instead of myObj.aProp

Questions
1

Hi all,
I created a generic class to display data tables but it won’t work if I feed it with classes instances instead of generic objects ({ like = « this »})

I wondered if it was possible to access a class instance property the same way we do it for generic objects. Unfortunately, the following code wont work :

Car = class()

function Car:init(model) 
  self.model = model
end

F = Car(‘Ford’)

F[‘model’] - - won’t return anything

Do you guys know any workaround for this ?

2

@threads Try this one. The first one I posted wasn’t what you wanted. Your function B:init(model) should be Car:init(model).

Using double quote

function setup()
    F = Car("Ford")
    print(F["model"])
end

Car = class()

function Car:init(model) 
  self.model = model
end

Using single quote

function setup()
    F = Car('Ford')
    print(F['model'])
end

Car = class()

function Car:init(model) 
  self.model = model
end
3

@dave1707 No sorry that B:init was a typo in my example, it doesn’t work, you can’t call a property like this I guess

4

@threads Did you look at the last example. That looks like what you want and it works.

5

That’s weird because the following code doesn’t work for me :

 train = new Train(category, number, from, to, arrTime, depTime)
      print(train["category"])  - - FAILS


function Train:init(category, number, from, to, arrTime, depTime)

  self.category = category
  self.number = number
  self.from = from
  self.to = to
  self.arrTime = arrTime
  self.depTime = depTime 

  ...  - - other stuff here  
end

I’m not in the setup function though, but I can’t do it there

6

Oh my, it’s the « new » keyword : it doesn’t pop an error but it isn’t required and fails to build the object properly !

Sorry, false alarm

Thanks for your help @dave1707 !!!

7

@threads No problem, that’s what I’m here for. You learned something and that’s always a good thing.