Swift - Public access level

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Introduction

If you want a1 and b1 to be publicly accessible, you need to declare that using the public keyword: 

class ClassA {
     public  var a1 = 10
}


class ClassB {
     public var b1 = 20
}

However, you will receive a compiler warning because ClassA has the default internal access, which essentially prevents a1 from being accessed outside the module.

To fix this, make the class public as well: 


public  class ClassA {
     public var a1 = 10
}

The ClassA and its property a1 are now accessible outside the module.

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