idea: try/catch and "rethrow"...?

Brendan Eich brendan at mozilla.com
Tue Feb 1 11:14:42 PST 2011


Deja vu all over again:

https://mail.mozilla.org/pipermail/es-discuss/2007-March/004076.html

/be


On Feb 1, 2011, at 11:09 AM, P T Withington wrote:

> [Interested bystander 2p.]
> 
> The thing you are looking for is common in other advanced dynamic languages (mostly Lisp derivatives, see http://en.wikipedia.org/wiki/Exception_handling#Condition_systems).  It is the concept of handling the condition in the context where the condition is signaled, rather than magically unwinding the stack looking for catch blocks to throw to.  DOM2 has a similar distinction, whether to handle an event in the 'capturing' phase or the 'bubbling' phase.
> 
> try/catch can be implemented in terms of condition handling, but not the other way around.  I would be all in favor of adding condition handling to JS, and recasting try/catch as syntactic sugar.
> 
> _______________________________________________
> es-discuss mailing list
> es-discuss at mozilla.org
> https://mail.mozilla.org/listinfo/es-discuss



More information about the es-discuss mailing list