A numeric quantity labeled with a unit of measure, with support for unit conversion and unit-aware calculations.
SDKs
Framework
struct Measurement<UnitType> where UnitType : Unit
Measurements support a large set of operators, including +, -, *, /, and a full set of comparison operators.
init(value: Double, unit: UnitCreate a Measurement given a specified value and unit.
let unit: UnitThe unit component of the Measurement.
var value: DoubleThe value component of the Measurement.
func convert(to: UnitConverts the measurement to the specified unit.
func converted(to: UnitReturns a new measurement created by converting to the specified unit.
static func != (Measurement<UnitReturns a Boolean value indicating whether two values are not equal.
static func * (Double, Measurement<UnitMultiply a scalar value by a measurement.
static func * (Measurement<UnitMultiply a measurement by a scalar value.
static func ..< (Measurement<UnitReturns a partial range up to, but not including, its upper bound.
static func / (Double, Measurement<UnitDivide a scalar value by a measurement.
static func / (Measurement<UnitDivide a measurement by a scalar value.
static func < <LeftCompare two measurements of the same Unit.
static func <= (Measurement<UnitReturns a Boolean value indicating whether the value of the first argument is less than or equal to that of the second argument.
static func == <LeftCompare two measurements of the same Dimension.
static func > (Measurement<UnitReturns a Boolean value indicating whether the value of the first argument is greater than that of the second argument.
static func >= (Measurement<UnitReturns a Boolean value indicating whether the value of the first argument is greater than or equal to that of the second argument.
static func < <LeftCompare two measurements of the same Unit.
static func == <LeftCompare two measurements of the same Dimension.
var description: StringA textual description of the measurement.
var debugA textual description of the measurement suitable for debugging.
var customA mirror that reflects the date interval.
var hashThe computed hash value for the date interval.
class NSMeasurementAn object representing a numeric quantity with a unit of measure that bridges to Measurement; use NSMeasurement when you need reference semantics or other Foundation-specific behavior.
typealias MeasurementAn alias for this value type's equivalent reference type.
static func ... (Measurement<UnitReturns a partial range extending upward from a lower bound.
static func ... (Measurement<UnitReturns a partial range up to, and including, its upper bound.
static func ... (Measurement<UnitReturns a closed range that contains both of its bounds.
static func ..< (Measurement<UnitReturns a half-open range that contains its lower bound but not its upper bound.
class UnitAn abstract class representing a unit of measure.
class DimensionAn abstract class representing a dimensional unit of measure.