Unsafe array indexing throughout project

[EstevanBR]

Feel free to close this issue if it's not valid.

I see things like

if let res = args[0].asObject() {

Which mixes safe code (if let) with unsafe array indexing (args[0])

Which would imo be safer as

if let firstArg = args.first, let res = firstArg.asObject() {

[migueldeicaza]

Where are you seeing this?

If this is for the generated setter arguments, we have bigger problems if the setter does not get at least one value ;-)

[migueldeicaza]

Closing, as it would not improve much per above