Instance member cannot be used on type

Question

I have the following class:

class ReportView: NSView {  
    var categoriesPerPage = [[Int]]()
    var numPages: Int = { return categoriesPerPage.count }
}
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Answer 1

For anyone else who stumbles on this make sure you're not attempting to modify the class rather than the instance! (unless you've declared the variable as static)

eg.

MyClass.variable = 'Foo' // WRONG! - Instance member 'variable' cannot be used on type 'MyClass'

instanceOfMyClass.variable = 'Foo' // Right!