joakim

// Inspired by this Python code: https://ralsina.me/weblog/posts/BB585.html
// Really really limited, but it works. "Look ma, no DAG!"

function evil(formula, sheet) {
  with (sheet.functions) {
    with (sheet.cells) {
      return eval(formula);
    }
  }
}

joakim

Collection = (spec) => {
  if (typeof spec !== 'object') throw new TypeError('Collection specification must be an object')
  return Object.freeze(Object.create(Collection.prototype, Object.getOwnPropertyDescriptors(spec)))
}
Collection.prototype = Object.create(null, {
  [Symbol.isConcatSpreadable]: { value: true },
  [Symbol.iterator]:           { value: function* () { for (let key in this) { yield this[key] } } },
  [Symbol.toPrimitive]:        { value: (hint) => hint === 'number' ? NaN : '[object Collection]' },
  [Symbol.toStringTag]:        { value: 'Collection' },
})

joakim

joakim

joakim

joakim

joakim

import [ read-lines ]: 'https://deno.land/std/io/buffer.ts'
import [ copy ]: 'https://deno.land/std/streams/conversion.ts'

#type: (search: #RegExp, replace: #text)

-- Pass-through the header
print "20 { Deno.args.join(';') }\r"

-- Check for type=inline parameter
inline: Deno.args.find (arg) ->

joakim

import { readLines } from 'https://deno.land/std/io/buffer.ts'
import { copy } from 'https://deno.land/std/streams/conversion.ts'
const print = console.log

type type = [search: RegExp, replace: string]

// Pass-through the header
print(`20 ${ Deno.args.join(';') }\r`)

// Check for type=inline parameter

joakim

nothing = new Proxy(Object.freeze(Object.create(null)), Object.create(null, {
  get: {
    value(target, property) {
      return property === Symbol.toPrimitive ? () => undefined : nothing
    }
  }
}))

Tuple = (...elements) => {
  if (elements.length === 0) return nothing

joakim

nothing = new Proxy(Object.freeze(Object.create(null)), {
  get(target, property) {
    if (property === Symbol.toPrimitive) return () => undefined
    return nothing
  },
  set() {
    return nothing
  }
})