Creates a new instance with the specified raw value.
If there is no value of the type that corresponds with the specified raw
value, this initializer returns `nil`. For example:
enum PaperSize: String {
case A4, A5, Letter, Legal
}
print(PaperSize(rawValue: "Legal"))
// Prints "Optional(PaperSize.Legal)"
print(PaperSize(rawValue: "Tabloid"))
// Prints "nil"
- Parameter rawValue: The raw value to use for the new instance.
The corresponding value of the raw type.
A new instance initialized with `rawValue` will be equivalent to this
instance. For example:
enum PaperSize: String {
case A4, A5, Letter, Legal
}
let selectedSize = PaperSize.Letter
print(selectedSize.rawValue)
// Prints "Letter"
print(selectedSize == PaperSize(rawValue: selectedSize.rawValue)!)
// Prints "true"
The corresponding value of the raw type.
A new instance initialized with `rawValue` will be equivalent to this
instance. For example:
enum PaperSize: String {
case A4, A5, Letter, Legal
}
let selectedSize = PaperSize.Letter
print(selectedSize.rawValue)
// Prints "Letter"
print(selectedSize == PaperSize(rawValue: selectedSize.rawValue)!)
// Prints "true"
get · iOS 13.0+
bottomLeft
TypeScript
get bottomLeft(): CMFormatDescription_Extensions_Value_ChromaLocation
Swift declaration
static let bottomLeft: CMFormatDescription.Extensions.Value.ChromaLocation
Chroma sample is co-sited with the bottom-left luma sample
get · iOS 13.0+
top
TypeScript
get top(): CMFormatDescription_Extensions_Value_ChromaLocation
Swift declaration
static let top: CMFormatDescription.Extensions.Value.ChromaLocation
Chroma sample is horizontally centered, but co-sited with the top
row of luma samples
get · iOS 13.0+
left
TypeScript
get left(): CMFormatDescription_Extensions_Value_ChromaLocation
Swift declaration
static let left: CMFormatDescription.Extensions.Value.ChromaLocation
Chroma sample is horizontally co-sited with the left column of luma
samples, but centered vertically
get · iOS 13.0+
dv420
TypeScript
get dv420(): CMFormatDescription_Extensions_Value_ChromaLocation
Swift declaration
static let dv420: CMFormatDescription.Extensions.Value.ChromaLocation
Cr and Cb samples are alternately co-sited with the left luma
samples of the same field
get · iOS 13.0+
bottom
TypeScript
get bottom(): CMFormatDescription_Extensions_Value_ChromaLocation
Swift declaration
static let bottom: CMFormatDescription.Extensions.Value.ChromaLocation
Chroma sample is horizontally centered, but co-sited with the bottom
row of luma samples
get · iOS 13.0+
center
TypeScript
get center(): CMFormatDescription_Extensions_Value_ChromaLocation
Swift declaration
static let center: CMFormatDescription.Extensions.Value.ChromaLocation
Chroma sample is fully centered
get · iOS 13.0+
topLeft
TypeScript
get topLeft(): CMFormatDescription_Extensions_Value_ChromaLocation
Swift declaration
static let topLeft: CMFormatDescription.Extensions.Value.ChromaLocation
Chroma sample is co-sited with the top-left luma sample
Skipped declarations
1 declarations were excluded from these bindings. Each reason comes from the generator or the iOS SDK compiler.
The iOS SDK compiler rejected this binding: type 'CMFormatDescription.Extensions.Value.ChromaLocation' does not conform to protocol 'OneSDKNamedConstants'