gistfile1.txt

let thermalRating = switch ProcessInfo.processInfo.thermalState {
case .nominal:
    return 0 

case .fair:
    return 1 

/// System performance may be impacted.
/// Reduce CPU, GPU, I/O, and visual effects if possible. 
case .serious:
    return 2 
 
/// System performance is significantly impacted 
/// Reduce CPU, GPU, I/O, and camera usage ASAP.   
case .critical:
    return 3 
}