This is nothing new. C compilers have been written in C. Python has been written in Python. It’s possible to use a compiler for Language X to compile a newer version of itself, with more features. It’s called bootstrapping. Bootstrapping a language Writing a compiler in its own language How do you write a compiler …
Comment out gem “coffee-script” in your Gemfile Use .js instead of .js.coffee for your javascript files
Add these lines to application.rb: config.generators.stylesheets = false config.generators.javascripts = false
a couple of ways I have done this in the past put the data in hidden fields, access the data in js/coffee # single value <%= hidden_field_tag “foo_name”, @foo.name, { :id => “foo-name” } %> $(‘#foo-name’).val(); # when the ‘value’ has multiple attributes <%= hidden_field_tag “foo”, @foo.id, { :id => “foo”, “data-first-name” => @foo.first_name, “data-last-name” …
As the error states, Angular disallows accessing DOM nodes in expressions. CoffeeScript uses an implicit return if none is specified. This means that for example the scope.open function in your code will: return element.dialog(‘open’); Angular will detect this and throw the error. If you add an explicit return it should solve the issue: scope.open = …
Ray nailed it in his comment. See the Buffer documentation; you have to specify an encoding argument (you probably want ‘utf8′) on a Buffer’s toString. // coffeescript console.log buffer.toString ‘utf8’ // javascript console.log(buffer.toString(‘utf8’));
I’ve finally found a real solution! And it’s super simple too! npm install grunt-newer –save-dev Then in your Gruntfile (after loading the task in grunt): watch: coffeescript: files: ‘assets/javascript/**/*.coffee’ tasks: [“newer:coffee”] And that’s it! The Awesome grunt-newer is awesome!
@ is not a valid character for a javascript identifier. Identifiers may only contain $, _, digits and letters. In coffeescript, @ means this. CoffeeScript has a few nice features related to the this keyword. First, CoffeeScript uses the @ symbol as shorthand for this.. For example, @foo is equivalent to this.foo. Second, if you …
console.log ‘hi’ for [1..3] To also handle 0 correctly: console.log ‘hi’ for [1..n] if n Or with prototype magic: Number::times = (fn) -> do fn for [1..@valueOf()] if @valueOf() return 3.times -> console.log ‘hi’ Note that the second method isn’t recommended because changing the Number prototype has global effects. Edit: Changed according to @BrianGenisio’s comment …
Since release r59, three.js provides those three functions to rotate a object around object axis. object.rotateX(angle); object.rotateY(angle); object.rotateZ(angle);