2017-02-11

directCell.js

const c = directCell( x => console.log('a'))

c(1, 1) // nothing
c(1, 0) // 'a'

effect( next => cell( state => ).pipe(cell(x => y)) void ))

const a = Arrow( id )

a.product(a).product(a)([1, [2, 3]])

regular-cell.js

const a = cell( x => x + 1 )
const b = cell( console.log )
const c = a.product(b)

a([1, [2, Nothing]]) === 2

c([0, 1]) // logs nothing
c([0, undefined]) // logs 1

c([0, 1]) === [1]
c([0, undefined]) === 1

const d = cell( x => x * 2 )
const e = d.pipe(c)

e([1, undefined]) // logs nothing
e(1, 1, undefined) // logs 3

e(1, 2, 3) === [2, 3]
e(1, 1, undefined) === [2, 3]

1 2 3
\ \ \
d a b

const idCell = cell( x => x )

const idA = a.pipe(id)

a(1) [2]// => 2
idA(1) [2, 2]// => 2