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POCoffeeScript - pass an anonymous function with parameters
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copied!<p>I can't fugure out how to pass an anonymous function that takes a parameter. Here is my situation:</p> <pre><code>class MyClass constructor: (@a) -> console.log("MyClass: created " + @a) show: -> console.log("MyClass: show " + @a) </code></pre> <p>then, with UnderscoreJS, this works:</p> <pre><code>_.map listOfMyClassObjects, (obj) -> obj.show </code></pre> <p>but I want to wrap the call to map in a separate function for convinience:</p> <pre><code>allMyClass(fun) -> _.map listOfMyClassObjects, fun(obj) </code></pre> <p>so that later I can do:</p> <pre><code>allMyClass((obj) -> obj.show()) </code></pre> <p>but the browser console says:</p> <pre><code>Uncaught ReferenceError: fun is not defined (anonymous function) require../browser.CoffeeScript.run ... </code></pre> <p>What is the correct synthax? Also, is it possible to simplify like this?</p> <pre><code> allMyClass(fun) -> _.map listOfMyClassObjects, obj[fun]() allMyClass(show()) </code></pre> <p><strong>UPDATE:</strong></p> <p>As per Thilo's answer, there was the syntax mistake in the function call. But also, there was a mistake in calling the function on the map iteration result. The working version is this:</p> <pre><code>allMyClass = (fun) -> _.map listOfMyClassObjects, (obj) -> fun(obj) </code></pre> <p>Still wandering if there is a shorter version of passing the class method to the <code>allMyClass</code> function though.</p> <p><strong>UPDATE2:</strong></p> <p>Simplification is possible like this:</p> <pre><code>allMyClass = (fun) -> _.map listOfMyclassObjects, (obj) -> obj[fun]() allMyClass("show") </code></pre> <p>Passing arguments to the <code>fun</code> would require passing more arguments all in all.</p>

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