printing-log-swift.swift

import Foundation

public struct Log
{
    public static var isEnabled = true
    
    public static func debug(_ m: @autoclosure ()->String, _ file: Any? = #file, _ f: String = #function, _ line: UInt = #line) {
        print(m(), file ?? "", f, line)
    }
    public static func error(_ m: @autoclosure ()->String, _ file: Any? = #file, _ f: String = #function, _ line: UInt = #line) {
        _print("🚨 \(m())", file, f, line)
    }
    public static func warn(_ m: @autoclosure ()->String, _ file: Any? = #file, _ f: String = #function, _ line: UInt = #line) {
        _print("⚠️ \(m())", file, f, line)
    }
    private static func _print(_ m: String, _ file: Any? = #file, _ f: String = #function, _ line: UInt = #line) {
        if isEnabled {
            print("\(file ?? "").\(f):\(line) -\(m)")
        }
    }
}


//Use:

Log.warn("\(error)")