UPDATE: Recently a brilliant article from Mozilla came up. Read it if you're curious. As you may know they are planning to include new Symbol primitive type in ECMAScript 6 (not to mention some other crazy stuff). I always thought that the...
I just stumbled upon the documentation for the new (proposed for ES6, but already implemented in Firefox, Chrome & Opera) datatype in JavaScript, Symbol: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol htt...
It took me a while but I finally figured out what the purpose of symbols in ECMAScript 6 is: avoiding name collision when attaching properties to shared objects - HTML elements e.g. (In case you're stuck on the same question, I recommend this art...
What is the point of the 'Symbol' type in ECMA-262-v6? Fast path implementation for object keys? What does it do under the hood - hash it with the guarantee that the underlying data is immutable?...
Let's take the following code: var obj = {}; var x = Symbol(); Object.defineProperties(obj, { [x]: { value: true, writable: true }, "property2": { value: "Hello", writable: false } // etc. etc. }); conso...
I'm trying to define an object with a symbol as key-type since MDN says: A symbol value may be used as an identifier for object properties [...] But using it as type for the key-property: type obj = { [key: symbol | string]: string }...
I've been around the block when it comes to languages, having worked with everything from C# to Lisp to Scala to Haskell, and in every language that supported them, symbols have acted pretty much the same; that is, any two symbols with the same n...
How can I check if a value is Symbol in JS? I do not see a Symbol.isSymbol() method. My test of (x instanceof Symbol) does not seem to work either....
I wonder if there is a nice way to get the descriptions of a Symbol. For example, var s = Symbol(5); The default implementation of the toString will simply print Symbol(5) I would like to find a way to extract the actual description i.e. 5...
Where can I find the list of symbols made available to us by d3.js which is referred by this line of code: d3.svg.symbol().type(/*Name of the symbol type that is available to us to use*/'triangle') Some of the available symbols include t...
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