JSPM – restraints@0.0.2

Package Exports

restraints

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (restraints) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

#restraints

use

npm install restraints

example - Fahrenheit to Celcius -- Celcius to Farhenheit

var restraints = require('restraints')
   , converter = restraints('9 * c = 5 * (f - 32)')
//when either the value for 'c' or 'f' are updated, their value will be attached to converter

converter({c : 21})
converter.f === 69.8
converter('forget') //all values are forgotten
converter({f : 80})
converter.c === 26.66666

another example

restraints is useful for creating a set of mathematical equations:

var equation = restraints('x^y = z')
equation({x:10, y:2})
equation.z === 100 //10^2=100

equation('forget') //all values are forgetten

equation({x:2, z:8})
equation.y === 3 //2^3=8

string of equations

var f = parse('x = y = z')
f({x:10})
assert(f.y === 10)
assert(f.z === 10)

var f = parse('x = y^2 = z^3')
f({y : 10})
assert(f.x === Math.pow(f.y, 2))
assert(f.z === Math.pow(f.y, 2/3))
assert(f.z === Math.pow(f.x, 1/3))