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  | let number = 42 | 
  
    
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  | let numbers = [1, 2, 3] | |
| let squares = numbers.map { $0 * $0 } | |
| print(squares) | 
  
    
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  | enum Number: Int { | |
| case one = 1, two, three, four, five | |
| } | |
| let result = Number.five.rawValue | 
  
    
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  | let number: Int? = 42 | |
| print(number) | 
  
    
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  | let numbers = [1, 2, 3, 4, 5, 6] | |
| let oddNumbers = numbers.filter { $0 % 2 == 1 } | |
| print(oddNumbers) | 
  
    
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  | func sum(_ a: Int, _ b: Int? = 3) -> Int { | |
| return a + (b ?? 0) | |
| } | |
| let result = sum(2) | 
  
    
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  | protocol MyDelegate { | |
| func doSomething() | |
| } | |
| class MyClass { | |
| var delegate: MyDelegate? | |
| } | 
  
    
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  | Text('Hello, World!') | 
  
    
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  | func optionalFunction() -> String? { | |
| return 'Hello, World!' | |
| } | 
  
    
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  | var computedProperty: Int { | |
| get { | |
| return 10 | |
| } | |
| } |