name property for built-in functions??

Brendan Eich brendan at
Thu Mar 5 17:40:09 PST 2009

On Mar 5, 2009, at 5:34 PM, Maciej Stachowiak wrote:

> The authors of Objective-J and the Capuccino framework have asked us  
> to either make mutable or else provide a way to  
> construct a function with a provided name. Since they use language  
> translation, they would like the debugger and other tools to reflect  
> the original declared names such as "[MyClassName  
> methodWithParam:andStuff:]", in other words Objective-C looking  
> methods. I don't know if language translation is the world's  
> greatest thing but it seemed like a valid use case to me when they  
> suggested it.

In their code generation scheme, do they ever require the generated  
function to have a particular non-global scope, or will global scope do?

If global only, then the Function constructor could make an instance  
with mutable name, maybe. Not easy to spec given that in every other  
respect the object returned by new Function is a function object, if  
we want the spec to keep name immutable for declared and expressed  
functions with names.

If local or global, we could make anonymous function expressions have  
no name property at all. I'm warming up to this. We could do likewise  
for the result of Function as well. Only declared functions and named  
function expressions would have an intrinsic name property.


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