JavaChip

JavaChip my attempt to make JavaScript simpler, more predictable, and provide control-flow tools to make development in an asyncronous environment more comfortable.

Conventions

[] – a collection of data (arrays, lists, dicts, hashes)
{} – a task or set of instructions; a block of code.
|| – discussing requirements
() – executing (possibly with a set of requiremnets); a context

Variables

hello = 'world'

Datatypes

The language should have datatypes, but they should be optional.

who = { |str name, int age| log("My name is #{name}, and I am #{age}.") }
who('John', 22)
//=> "My name is John, and I am 22."
who(1337, 22)
//=> Error: parameter "name" should be a String.

who = { |name, age| log("My name is #{name}, and I am #{age}.") }
who(1337, "older than you")
//=> "My name is 1337, and I am older than you."

Basic Operators

Blocks

creating and calling

block = {}

sayHello = { log('hello world') }
sayHello() // logs: 'hello world'

parameters

greet = { |who| log('hello', who) }
greet('Bob') // 'Hello Bob'

returning values

add = { |num1, num2| num1 + num2 }
add(1,2) // undefined
add = { |num1, num2| resolve(num1 + num2) }
add(1,2) // 3

function reference with params

add = { |num1, num2| resolve(num1 + num2) }
add(1,1) // 2
get_two = add|1,1|
get_two() // 2

callbacks

shake_hand = { log('executing secret hand shake...') }

greet('Bob')&{ shake_hand() }
  // "Hello Bob"
  // "executing secret hand shake..."

greet('Bob')&shake_hand

callback chains

greet('Bob')
  &shake_hand
  &moonwalk

parallel callbacks

greet('Bob')
  &[ shake_hand, moonwalk ]

promises

done = greet('Bob')&
done(shake_hand)

named inline blocks

server.on('request', reqHandler: { |req, res|
  res.end('Hola!')
})

greet('Bob')&my_callback: { /* do stuff here */ }

Arrays

[ item1, item2, item3 ]

log(['dogs','cats','antelope']) // logs...
// [ 1: 'dogs'
//   2: 'cats'
//   3: 'antelope' ]

names = [ 'Bob', 'Kyle', 'James' ]
names[1] //=> 'Bob'

Objects

[ key: 'value' ]

bob = [ name: 'Bob', profession: 'Builder' ]
bob.name // 'Bob'
bob['profession'] // 'Builder'

nested objects & arrays

[ companies: [
    [ name: "google", url: "www.google.com" ],
    [ name: "yahoo", url: "www.yahoo.com" ],
    [ name: "microsoft", url: "www.microsoft.com" ]
  ],
  people: [ "Steve Jobs", "Bill Gates", "Luke Wroblewski" ] ]

webdesserts/javachip.md