Units of Measurement and their conversions

• All units are abstracts over Float
• SI units should contain no @:from/@:to casts
• Non-SI units should contain @:from/@:to casts to their equivalent SI units.

References:

• https://en.wikipedia.org/wiki/International_System_of_Units
• https://en.wikipedia.org/wiki/SI_base_unit
  • Summary table: https://en.wikipedia.org/wiki/International_System_of_Units#Base_units
• https://en.wikipedia.org/wiki/SI_derived_unit
  • Summary table: https://en.wikipedia.org/wiki/International_System_of_Units#Derived_units
• https://en.wikipedia.org/wiki/Conversion_of_units

Convenient Type Conversions

By utilizing the powerful type system of Haxe, we can have zero-overhead automatic type-conversion between different types.

Example:

final a = new Ampere(10);
final v = new Volt(220);

final w = a * v;
$type(w); // Watt
trace(w.symbol); // 'W'
trace(w.toFloat()); // 2200

final a = w / v;
$type(a); // Ampere
trace(a.symbol); // 'A'
trace(a.toFloat()); // 10

final v = w / a;
$type(v); // Volt
trace(v.symbol); // 'V'
trace(v.toFloat()); // 220

Generated code (js):

let v = 220;
let a = 10;
let w = a * v;
console.log("W");
console.log(w);

let a = w / v;
console.log("A");
console.log(a);

let v = w / a;
console.log("V");
console.log(v);

Drop-in Replacement for Date, DateTools and Math in stdlib

Apply proper units in these classes. For example, date.getTime() will give you Millisecond, trigonometric functions in Math will accept and return Radian, and so on.

Best used with a top-level import.hx:

import why.util.Date;
import why.util.Math;

using why.util.DateTools;