BoxPattern.swift

@dynamicMemberLookup
@propertyWrapper
public <#class or struct#> <#Prefix#>Box<Content> {
    public var content: Content
    
    @inlinable
    public var wrappedValue: Content {
        get { content }
        set { content = newValue }
    }
    
    // @inlinable
    // var projectedValue: <#Type#> { <#code#> }
    
    @inlinable
    public init(wrappedValue: Content) {
        self.init(wrappedValue)
    }
    
    @inlinable
    public init(_ content: Content) {
        self.content = content
    }
    
    @inlinable
    public subscript<T>(dynamicMember keyPath: KeyPath<Content, T>) -> T {
        get { content[keyPath: keyPath] }
    }
    
    @inlinable
    public subscript<T>(dynamicMember keyPath: WritableKeyPath<Content, T>) -> T {
        get { content[keyPath: keyPath] }
        set { content[keyPath: keyPath] = newValue }
    }
}

See more:

• Box initializers
• IdentifiableBox example
• Ref&Box example

Back to index