List content = [
'01:Dart Basic',
'02:Variable',
'03:Type Conversion',
'04:String Method',
'05:Type of String',
'06:Operators',
'07:Condition',
'08:Switch',
'09:Class&Enum',
'10:Loop',
'11:Function',
'12:List Method',
'13:Sets Method',
'14:Null Safety',
'15:Inheritence',
'16:Parameter',
]; - Install Dart SDK or use Dartpad.dev