`hasPermission` and `hasDevices` cheat sheet

Cheat Sheet 💩

How it works?

hasPermissions check

hasDevices over check

Let's code

let scanner = new ZXingScannerComponent();

Below we have something I call qubool (quantum booleans), because they're booleans with multiple values, more than 0 and 1, like a qubit.

scanner.hasPermissions

State	Description
true	Permission Granted.
false	Permission Denied.
unedfined	Not checked yet.
null	Check has failed and the state couldn't be updated.

scanner.hasDevices

State	Description
true	Usable devices found.
false	No available devices.
unedfined	Not checked yet.
null	Check has failed and the state couldn't be updated.