fuse

[a..., b] = ["foo", "bar", 42]
a # [ 'foo', 'bar' ]

fuse

f("a", 42)

b # []

fuse

f = (a, b..., c) ->

f("a", "foo", "bar", "baz", 42)

# b => [ 'foo', 'bar', 'baz' ]

fuse

helloWorld = (street = "Lille") -> console.log "Hello world from #{street}."

helloWorld()
# Hello world from Lille.
helloWorld("Paris")
# Hello world from Paris.

fuse

var f = function() {}

// et non:

function f() {}

fuse

cube = function(num) {
  return Math.pow(num, 3);
};

fuse

cube = (num) -> Math.pow num, 3

fuse

(function() {
  return console.log("Hello from coffee");
});

fuse

() -> console.log "Hello from coffee"

fuse

# équivalences
a ?= b
a = b unless a?
a = a ? b