AI-generated Key Takeaways
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          RectangularCoordinateRegionrepresents a rectangular bounding box on the Earth's surface, defined by its north-east and south-west corners.
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          This struct is immutable and provides functionalities for comparison, hashing, and validation. 
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          It can be used to define a region bias or restriction for place searches, represented as URLQueryItems.
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          RectangularCoordinateRegionconforms to protocols includingCoordinateRegion,CoordinateRegionBias,CoordinateRegionRestriction,Equatable, andHashable.
RectangularCoordinateRegion
struct RectangularCoordinateRegionextension RectangularCoordinateRegion : CoordinateRegion, CoordinateRegionBias, CoordinateRegionRestriction, Copyable, Equatable, Escapable, Hashable, SendableRectangularCoordinateRegion represents a rectangular bounding box on the Earth’s surface. RectangularCoordinateRegion is immutable and can’t be modified after construction.
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                  Returns a Boolean value indicating whether two values are equal. Equality is the inverse of inequality. For any values aandb,a == bimplies thata != bisfalse.DeclarationSwift static func == (lhs: RectangularCoordinateRegion, rhs: RectangularCoordinateRegion) -> BoolParameterslhsA value to compare. rhsAnother value to compare. 
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                  Returns the region bias as URLQueryItem.DeclarationSwift func bias() -> URLQueryItem
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                  Hashes the essential components of this value by feeding them into the given hasher. Implement this method to conform to the Hashableprotocol. The components used for hashing must be the same as the components compared in your type’s==operator implementation. Callhasher.combine(_:)with each of these components.Important In your implementation of hash(into:), don’t callfinalize()on thehasherinstance provided, or replace it with a different instance. Doing so may become a compile-time error in the future.DeclarationSwift func hash(into hasher: inout Hasher)
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                  The hash value. Hash values are not guaranteed to be equal across different executions of your program. Do not save hash values to use during a future execution. Important hashValueis deprecated as aHashablerequirement. To conform toHashable, implement thehash(into:)requirement instead. The compiler provides an implementation forhashValuefor you.DeclarationSwift var hashValue: Int { get }
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                  Inits the northEast and southWest coordinates corresponding to the rectangular region defined by the two corners. DeclarationSwift init?(northEast: CLLocationCoordinate2D, southWest: CLLocationCoordinate2D)
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                  Returns false if there are no points contained in this region. DeclarationSwift var isValid: Bool { get }
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                  The North-East corner of this region. DeclarationSwift var northEast: CLLocationCoordinate2D { get }
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                  Returns the region restriction as URLQueryItem.DeclarationSwift func restriction() -> URLQueryItem
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                  The South-West corner of this region. DeclarationSwift var southWest: CLLocationCoordinate2D { get }