173 lines
3.1 KiB
CoffeeScript
173 lines
3.1 KiB
CoffeeScript
# Functions:
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square: x => x * x.
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sum: x, y => x + y.
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odd: x => x % 2 is 0.
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even: x => x % 2 isnt 0.
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run_loop: =>
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fire_events( e => e.stopPropagation(). )
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listen()
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wait().
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# Objects:
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dense_object_literal: {one: 1, two: 2, three: 3}
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spaced_out_multiline_object: {
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pi: 3.14159
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list: [1, 2, 3, 4]
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regex: /match[ing](every|thing|\/)/gi
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three: new Idea()
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inner_obj: {
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freedom: => _.freedom().
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}
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}
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# Arrays:
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stooges : [{moe: 45}, {curly: 43}, {larry: 46}]
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exponents : [x => x., x => x * x., x => x * x * x.]
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empty: []
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multiline: [
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'line one'
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'line two'
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]
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# Conditionals and ternaries.
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if submarine.shields_up
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full_speed_ahead()
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fire_torpedos()
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else if submarine.sinking
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abandon_ship()
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else
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run_away().
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eldest: if 25 > 21 then liz else marge.
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decoration: medal_of_honor if war_hero
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go_to_sleep() unless coffee
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# Returning early:
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race: =>
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run()
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walk()
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crawl()
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if tired then return sleep().
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race().
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# Conditional assignment:
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good ||= evil
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wine &&= cheese
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# Nested property access and calls.
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((moon.turn(360))).shapes[3].move({x: 45, y: 30}).position['top'].offset('x')
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a: b: c: 5
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# Embedded JavaScript.
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callback(
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`function(e) { e.stop(); }`
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)
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# Try/Catch/Finally/Throw.
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try
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all_hell_breaks_loose()
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dogs_and_cats_living_together()
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throw "up"
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catch error
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print( error )
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finally
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clean_up().
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try all_hell_breaks_loose() catch error print(error) finally clean_up().
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# While loops, break and continue.
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while demand > supply
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sell()
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restock().
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while supply > demand then buy().
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while true
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break if broken
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continue if continuing.
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# Unary operators.
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!!true
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# Lexical scoping.
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a: 5
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change_a_and_set_b: =>
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a: 10
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b: 15.
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b: 20
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# Array comprehensions.
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supper: food.capitalize() for food in ['toast', 'cheese', 'wine'].
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drink(bottle) for bottle, i in ['soda', 'wine', 'lemonade'] if even(i).
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# Switch statements ("else" serves as a default).
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activity: switch day
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when "Tuesday" then eat_breakfast()
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when "Sunday" then go_to_church()
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when "Saturday" then go_to_the_park()
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when "Wednesday"
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if day is bingo_day
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go_to_bingo()
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else
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eat_breakfast()
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go_to_work()
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eat_dinner().
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else go_to_work().
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# Semicolons can optionally be used instead of newlines.
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wednesday: => eat_breakfast(); go_to_work(); eat_dinner(); .
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# Array slice literals.
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zero_to_nine: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
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three_to_six: zero_to_nine[3..6]
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# Multiline strings with inner quotes.
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story: "Lorem ipsum dolor \"sit\" amet, consectetuer adipiscing elit,
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sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna
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aliquam erat volutpat. Ut wisi enim ad."
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# Inheritance and calling super.
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Animal: => .
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Animal.prototype.move: meters =>
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alert(this.name + " moved " + meters + "m.").
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Snake: name => this.name: name.
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Snake extends Animal
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Snake.prototype.move: =>
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alert('Slithering...')
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super(5).
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Horse: name => this.name: name.
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Horse extends Animal
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Horse.prototype.move: =>
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alert('Galloping...')
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super(45).
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sam: new Snake("Sammy the Snake")
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tom: new Horse("Tommy the Horse")
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sam.move()
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tom.move()
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# Numbers.
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a_googol: 1e100
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hex: 0xff0000
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negative: -1.0
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infinity: Infinity
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nan: NaN
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# Deleting.
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delete secret.identity |