picomath/generic/subtract.js

export default function create(pmath) {
   const add = pmath('add')
   const negate = pmath('negate')
   return pmath(
      'subtract',
      [args => args.length === 2, (x, y) => add(x, negate(y))],
      create, pmath)
   return pmath.subtract
}
feat: Initial core of picomath Implements a totally simplistic "poortf" mutable typed function and a picomath instance generator, as well as the very beginnings of a number type and one generic function and a default full picomath instance. Also provides some tests which serve as usage examples. 2022-03-25 07:49:03 +00:00			`export default function create(pmath) {`
			`const add = pmath('add')`
			`const negate = pmath('negate')`
feat(poortf): add concept of 'author' to an imp of a TF And make it so that if the same author adds imps again, they replace the previous imps from that author. Use this feature to avoid the explicit check for double-inclusion in subtract, and test it worked. 2022-03-25 18:31:06 +00:00			`return pmath(`
			`'subtract',`
			`[args => args.length === 2, (x, y) => add(x, negate(y))],`
feat: Invalidation and lazy reloading of implementations The interface is a bit clunky, the "author" and the callback "data" have to be specified when adding (an) implementation(s) in order for this to work. But it does, and this is just a PoC, the interface could be cleaned up. 2022-03-25 20:09:50 +00:00			`create, pmath)`
feat: Initial core of picomath Implements a totally simplistic "poortf" mutable typed function and a picomath instance generator, as well as the very beginnings of a number type and one generic function and a default full picomath instance. Also provides some tests which serve as usage examples. 2022-03-25 07:49:03 +00:00			`return pmath.subtract`
			`}`