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I see in some languages that compile for javascript, such as Typescript and Coffeescript, the use of @ variables, as well as cases where it is not used. For example:
w = 10;
@v = 11;
After all, what is the point of @ and the difference between using it or not?
7
In Javascript, this means nothing, not even a valid variable identifier (like $ or _).
In the Coffeescript, the @ is the same thing as this. Only syntactic sugar.
In Typescript, the @ inherited from Atscript. In this case it is a decorator, like those in Python.
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They are decorators of functions and properties. When you use a decorator adds or changes the shape with the function or property works.
Although they look like java annotations and attributes of C#, is it really looks like the python decorator.
Only available from Ecmascript 6.
Implementation proposal from him which is where I saw something more canonical about him.
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