On Wed, Dec 12, 2012 at 7:20 PM, Jorge Chamorro <[email protected]>wrote:
> On 12/12/2012, at 18:37, Rick Waldron wrote: > > > > On Wed, Dec 12, 2012 at 2:17 AM, Isaac Schlueter <[email protected]> wrote: > > On Tue, Dec 11, 2012 at 7:18 PM, spqr <[email protected]> wrote: > > > maybe my question should have been "why does JavaScript have eval()?" > ;-) > > > > I think a lot of people have wondered the same thing. > > > > Yes, it has its uses, but at this point, I don't know of any that > > aren't better served using some other mechanism. eval() has weird > > optimization-destroying semantics that cannot ever be changed, due to > > the fact that JavaScript must be backwards compatible forever. > > > > > > Runtime code generation? new Function( thecode ) works just as well, I > guess > > ...sometimes: > > (function (p) { > > eval("(function(){console.log(p)})")(); > > try { > Function("console.log(p)")(); > } > catch (e) { > console.log("FAIL -> "+ e.message); > } > > })("OK"); > > OK > FAIL -> Can't find variable: p > > Of course not, but that's not what I was talking about, is it? I definitely said "Runtime code generation", by which I meant "the entire program" is first generated, by some means, into a string, which is then eval'ed. See also: Traceur, CoffeeScript (anything the compiles something else into JavaScript at runtime) Rick > -- > Jorge. > > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
