- From: Boris Zbarsky <bzbarsky@MIT.EDU>
- Date: Mon, 02 Apr 2012 11:06:27 -0400
- To: "public-script-coord@w3.org" <public-script-coord@w3.org>
I was reading the array sections of WebIDL, and I had two questions. 1) The spec says that for platform array objects the [[Extensible]] property is always true. Why is that, exactly? Shouldn't one be able to Object.seal() or Object.preventExtensions() platform array objects? It's doable for other platform objects, afaict... 2) http://dev.w3.org/2006/webapi/WebIDL/#idl-array says that arrays are passed by reference and that "Passing an array to a platform object could result in that array being modified by the object." However http://dev.w3.org/2006/webapi/WebIDL/#es-array says that converting an ES value to an IDL array always allocates a new array. I'm not sure how to reconcile these two statements; at the moment I'm assuming that the informative text at the first link is in error and the normative requirements are correct: arrays are passed by value but returned by reference. Is that right? -Boris
Received on Monday, 2 April 2012 15:07:03 UTC