型で単位を表す

F#のUnits of Measureが元祖にあって、それを別の言語でも輸入してる感じだろうか？mrsekut.icon

Units of Measureが言語レベルで用意されている

Haskell

Scala

code:scala

import spire.math._

import spire.implicits._

val length1 = 100.0.withUnitMeter

val length2 = 10.0.withUnitCentimeter

val sum = length1 + length2.inMeter

Rust

code:rs

extern crate uom;

use uom::si::f64::*;

use uom::si::length::{meter, centimeter};

fn main() {

let length1 = Length::new::<meter>(100.0);

let length2 = Length::new::<centimeter>(10.0);

let sum = length1 + length2;

}

C++

code:cpp

#include <boost/units/systems/si/length.hpp>

#include <boost/units/systems/si/prefixes.hpp>

#include <boost/units/io.hpp>

int main() {

using namespace boost::units;

quantity<si::length> length1(100.0 * si::meters);

quantity<si::length> length2(10.0 * si::centimeters);

auto sum = length1 + length2;

}

TypeScript