# MLSendableFeatureValue A sendable feature value. ``` struct MLSendableFeatureValue ``` ## Overview This version of feature value is similar to [`MLFeatureValue`](/documentation/CoreML/MLFeatureValue) but it can be passed across concurrency domains. Once in the target concurrency domain, you can then convert it to a [`MLFeatureValue`](/documentation/CoreML/MLFeatureValue). ## Topics ### Creating a sendable feature value [`init(_:)`](/documentation/CoreML/MLSendableFeatureValue/init(_:)) Creates a feature value containing a double-precision floating-point value. [`init(undefined: MLFeatureType)`](/documentation/CoreML/MLSendableFeatureValue/init(undefined:)) Creates an undefined feature value of a specific type. ### Accessing the values [`var doubleValue: Double?`](/documentation/CoreML/MLSendableFeatureValue/doubleValue) The double-precision floating-point value, if the contained value is a double. [`var float16Value: Float16?`](/documentation/CoreML/MLSendableFeatureValue/float16Value) The 16-bit floating-point value, if the contained value is a 16-bit float. [`var floatValue: Float?`](/documentation/CoreML/MLSendableFeatureValue/floatValue) The single-precision floating-point value, if the contained value is a float. [`var integerDictionaryValue: [Int : Double]?`](/documentation/CoreML/MLSendableFeatureValue/integerDictionaryValue) The integer dictionary value, if the contained value is a dictionary of integers to numbers. [`var integerValue: Int?`](/documentation/CoreML/MLSendableFeatureValue/integerValue) The integer value, if the contained value is an integer. [`var isScalar: Bool`](/documentation/CoreML/MLSendableFeatureValue/isScalar) A Boolean value indicating whether the value is a single number. [`var isShapedArray: Bool`](/documentation/CoreML/MLSendableFeatureValue/isShapedArray) A Boolean value indicating whether the value is a shaped array. [`var isUndefined: Bool`](/documentation/CoreML/MLSendableFeatureValue/isUndefined) A Boolean value indicating whether the value is missing or undefined. [`var stringArrayValue: [String]?`](/documentation/CoreML/MLSendableFeatureValue/stringArrayValue) The string array value, if the contained value is an array of string. [`var stringDictionaryValue: [String : Double]?`](/documentation/CoreML/MLSendableFeatureValue/stringDictionaryValue) The string dictionary value, if the contained value is a dictionary of strings to numbers. [`var stringValue: String?`](/documentation/CoreML/MLSendableFeatureValue/stringValue) The string value, if the contained value is a string. [`var type: MLFeatureType`](/documentation/CoreML/MLSendableFeatureValue/type) The type of value. ### Getting the shaped array value [`func shapedArrayValue(of: Scalar.Type) -> MLShapedArray?`](/documentation/CoreML/MLSendableFeatureValue/shapedArrayValue(of:)) Returns the shaped array value, if the contained value is a shaped array of the specified type. ## Relationships ### Conforms To [`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible) [`Sendable`](/documentation/Swift/Sendable) [`Copyable`](/documentation/Swift/Copyable) [`Escapable`](/documentation/Swift/Escapable) [`Equatable`](/documentation/Swift/Equatable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)