Quantity

struct

Public Struct Quantity<Const L: Int, Const M: Int, Const T: Int> Implements Comparable, Hashable, Printable, Defaultable

Local distance = Kilometers(3)
Local time = Minutes(10)
Local speed: MetersPerSecond = distance / time
Expect(IsClose(speed.Value, 5.0))
Local total: Meters = distance + Meters(500)
Expect(total.Value == 3500.0)
// distance + time doesn't compile: they're different units.

std/math/units.fb, line 38

• Public Field Value: Double field #

  The value in the base units, and the units they make.

• Public Static Method Zero(): Quantity<L, M, T> static method #

  A quantity of 0 of these units.

• Public Static Method DefaultValue(): Quantity<L, M, T> static method #

  Zero, in its units.

• Public Method ToString(): String method #

  The value and its units, as SI writes them: "9.8 m/s^2", "3 kg m/s^2", "50 1/s", or "4 kg/(m s^2)", and the value alone without any.

• Operator +(a: Quantity<L, M, T>, b: Quantity<L, M, T>): Quantity<L, M, T> operator #

  a plus b.

• Operator -(a: Quantity<L, M, T>, b: Quantity<L, M, T>): Quantity<L, M, T> operator #

  a minus b.

• Operator -(a: Quantity<L, M, T>): Quantity<L, M, T> operator #

  a negated.

• Operator *(a: Quantity<L, M, T>, scale: Double): Quantity<L, M, T> operator #

  a times scale.

• Operator *(scale: Double, a: Quantity<L, M, T>): Quantity<L, M, T> operator #

  scale times a.

• Operator /(a: Quantity<L, M, T>, scale: Double): Quantity<L, M, T> operator #

  a divided by scale.

• Operator *<Const L2: Int, Const M2: Int, Const T2: Int>(a: Quantity<L, M, T>, b: Quantity<L2, M2, T2>): Quantity<L + L2, M + M2, T + T2> operator #

  a times b, whose exponents are the sum of a's and b's.

• Operator /<Const L2: Int, Const M2: Int, Const T2: Int>(a: Quantity<L, M, T>, b: Quantity<L2, M2, T2>): Quantity<L - L2, M - M2, T - T2> operator #

  a divided by b, whose exponents are the difference of a's and b's.

• Operator <(a: Quantity<L, M, T>, b: Quantity<L, M, T>): Bool operator #

  Whether a is less than b, in the same units.