Hi, On Oct 21, 3:39 am, chrysanthe m <chrysant...@gmail.com> wrote: > Hello > How do I clear a prototype hash? I have finally tried and failed with below > after trying hashBrown.length=0 and hashBrown.clear(). > hashBown.each(function(key) { > hashBrown.unset(key); > });
I'm surprised the loop didn't work, it seems to: http://jsbin.com/ejeju4/2 Or you could add your own `clear` function, but you'd want to be sure to check with each Prototype dot release that the implementation didn't need to be tweaked: * * * * // Add Hash#clear // Note that this must be RECHECKED on every Prototype dot release // to ensure that the internals haven't changed. (function() { function Hash_clear() { this._object = {}; } Hash.prototype.clear = Hash_clear; })(); * * * * http://jsbin.com/ibipe4 I would _not_ suggest just doing hashBrown._object = {}; inline in your code. Define a method and check the implementation on every dot release, so there's only one place to add it. I _know_ I've seen discussion of adding a #clear method to hash, but I don't recall the result. As it's not in 1.7, maybe someone thought it wasn't a good idea, but it seems like an odd omission to me. I've done a ticket in Lighthouse[1] offering to do a patch on git (for 1.7.1, not 1.7.0) if people do want it. [1] https://prototype.lighthouseapp.com/projects/8886-prototype/tickets/1158-add-hashclear FWIW, -- T.J. Crowder Independent Software Engineer tj / crowder software / com www / crowder software / com -- You received this message because you are subscribed to the Google Groups "Prototype & script.aculo.us" group. To post to this group, send email to prototype-scriptacul...@googlegroups.com. To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.