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0 pointsnotb13y ago0 comments

That article points out a design decision that the author disagrees with. It does not prove that CoffeeScript's scoping is broken.

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eurleif13y ago

The whole point of lexical scoping is that code in an inner scope can't mess with an outer scope's variables without meaning to. CoffeeScript doesn't achieve that. The same code in an inner scope means different things depending on whether the outer scope uses the same variable names. It's broken.

notbOP13y ago

Lexical scoping is a term to classify languages. The 'point' is to make it easier to understand how a language behaves.

If you want to have var with the same name as something in an outer scope, there are ways to do it, specifically an IIFE.

Here's an article for you: https://github.com/raganwald/homoiconic/blob/master/2012/09/...

mistercow13y ago

Also, using really common identifier names (like "log") in outer scopes is a bad idea regardless of how your language's scoping works. Writing `{log} = Math` at the top of the file is just polluting your namespace for no good reason. You shouldn't do it, just like you shouldn't use `from math import *` in Python.

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