Re: ES3.1 Object static methods rationale document

. Granted, I've never seen this pattern used in production code except incidentally, but it's a guarantee that ES3.0 does have nonetheless and I could see myself using it if I really wanted to protect an object's prototype from being modified. -- David liorean Andersson

Re: for-in statement: null and undefined

://www.ecmascript.org/es4/spec/incompatibilities.pdf -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: More string indexing semantics issues

On 25/06/2008, liorean [EMAIL PROTECTED] wrote: Also, while String objects are created as temporaries when looking up a property on a string, how many of those properties or methods actually return a String object? The only situation I can think of off the top of my head where you're going

Re: Ordering

is the only browser that doesn't use insertion order enumeration. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Namespaces as Sugar (was: complexity tax)

for each such case. (If using the form operator [no newlines here] ident, that would be a safe way to do it since all code looking like that cause a syntax error in ES3.) I don't know if that's a good or bad idea though. -- David liorean Andersson ___ Es4

Re: Forwards-compatible syntax proposal

, for example by prohibiting adding new operators and keywords. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Proposed ES4 draft 1

for that particular name or a catch-all, now, that's where this issue arises. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: application/* mime-types and SVN [Was Re: Forwards-compatible syntax proposal]

2008/5/14 Mike Samuel [EMAIL PROTECTED]: Ok. So it's a content-type which is not a mime-type even though it looks like one? Is there a separate recommendation that defines a mime-type for ecmascript? uri:http://www.ietf.org/rfc/rfc4329.txt -- David liorean Andersson

Re: getter and setter inheritance

world of ES3, I expect. Or one could consider an ES3 property as a getter/setter pair, if one wished. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Declarations

the scoping to function level since all browser hosted implementations currently guarantee use even after the block has exited. [1] uri:https://mail.mozilla.org/pipermail/es4-discuss/2007-March/000483.html [2] uri:https://mail.mozilla.org/pipermail/es4-discuss/2007-March/000495.html -- David liorean

Re: Strict mode recap

namespace lookups too, however. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Strict mode recap

liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: ES4 draft: Object initializers

()..., get *: function(propname)..., set *: function(propname, value)..., ... }; The brackets for syntax would from what I can tell work here, since they are syntax errors in ES3. Or using some double keyword syntax I guess. -- David liorean Andersson

Re: Dumb Q: Where on the ES4 Wiki are draft spec pages???

the public feature specs drafts are here: uri:http://wiki.ecmascript.org/doku.php?id=features_specs:feature_specs Lars has posted some more for review here on es4-discuss though. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss

Re: Controlling DontEnum (was: ES4 draft: Object)

mechanisms in ES4 (but not in ES3.1 obviously) Good to hear, because I still want to see something that can be used in object literals and property declarations. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https

Re: [selectors-api] Why have two identical differently named interfaces?

that only makes sence on elements and not on any other nodes - element-rooted instead of subtree-only-but-document-rooted queries. (I don't see any real benefit from such an interface though, but I've seen the idea mentioned on the mailing lists.) -- David liorean Andersson

Re: [selectors-api] Why have two identical differently named interfaces?

Oops, don't know how I ended up sending that to this mailing list - it was intended for the WebAPI WG list... -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: ES4 draft: Object

a specific slice syntax in ES4, but the slice functionality itself is ES3 compatible.) -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: ES4 draft: Object

). And near the end of the document you have /p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/p/div Slightly broken conversion tool? -- David liorean Andersson ___ Es4

Re: ES4 draft: Object

it appears to be GMail's fault. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: ES4 draft: Error classes

into the page using DOM; javascript written directly into the page using innerHTML? -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: ES4 draft: Error classes

used it on, however, so I can't look it up.) I recall there was some engine that used the name lineNo for that (together with a property for getting the column number I think, though I can't recall the name). There was also some engine using the name source for the file name. -- David liorean

Re: Triple quoted strings

On 06/03/2008, liorean [EMAIL PROTECTED] wrote: (Hmm. Were there any proposal for adding a any-includes-newline flag or a any-including-newlines escape instead of the [\s\S] cludge? If not, is \A) Never finished that sentence it seems. It should have run: If not, is \A or some similar

Re: Triple quoted strings

, and for the use case of not having to escape singly quoted delimiters in the string, what we have is good enough. I think we should keep it as-is. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org

Re: ES4 draft: Triply quoted string literals

every backslash located inside the string. Seems so to me. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Greedy triple-quoted string literals

On Feb 18, 2008 1:17 PM, liorean [EMAIL PROTECTED] wrote: Basically the idea was along the lines of investigating the effects of removing GetValue usage from those productions whose semantics just pass values through (such as all the shortcut evaluation operators, parenthesised

Re: Greedy triple-quoted string literals

On Feb 18, 2008 1:17 PM, liorean [EMAIL PROTECTED] wrote: Basically the idea was along the lines of investigating the effects of removing GetValue usage from those productions whose semantics just pass values through (such as all the shortcut evaluation operators, parenthesised

Re: Greedy triple-quoted string literals

, nor do I know of any definition of greedy/lazy algorithms as opposed to greedy/lazy quantifiers in regex or grammars. I've got no formal CS education though, so I've not read that much of the literature... -- David liorean Andersson ___ Es4-discuss mailing

Re: Function inside if statement?

-within-labelled-statement case, IIRC. In other words, to do a full set of tests one need to try both the statement-list wrapped versions and the plain function declaration versions, because they may have differing results. -- David liorean Andersson

Re: Why packages and namespaces?

to an end at the right curly brace. /be -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: proper tail calls

ImplicitTailCallElimination=false;, leaving the default behaviour for implicit TCE up to the implementation? Or would that be three ways too many to handle it? -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https

Re: proper tail calls

up to the engine implementors. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Global functions

compilation unit. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Anyone got an emacs mode file for es4?

liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Is this-propagation as written useful?

desired, judging from real-world problems. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Function.prototype.toString spec

, and not on the inside scope at all. This means a dissociated function object from a function declaration will no longer be able to use the original name as a reference to itself. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https

Re: Close review of Language Overview whitepaper

that it merits its own operator syntax. Seems like an innocent enough extension to me, and for some of the uses, it should definitely allow engine to perform it faster than if the developers had to code the equivalent functionality using only ES3. -- David liorean Andersson

Re: roundTiesToEven

, there's likely a significant risk that changing to this method could break some existing ECMAScript. That's really serious breakage - books, tutorials, references and real world code all take for granted that halves alway round up. -- David liorean Andersson

Re: Chris Wilson: What I think about ES4

side. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: [TLUG]: ECMAScript (Javascript) Version 4 - FALSE ALARM

language isn't important, what's important is the fact it's pretty much entirely additional features that were lacking in the predecessor or added orthogonal mechanisms that makes things possible in the engine that were not possible before. -- David liorean Andersson

Re: Syntax for union types

, as well as other syntax additions, it's going to be one tiny part of an entire new domain to learn. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Rule 317

On Tue, 2007-10-23 at 14:58 +0200, liorean wrote: It's there to prevent the grammar from being ambiguous. function, let and { have different meaning in statement context from expression context. If the ExpressionStatement construct allowed them, then they would be ambigous in statement

Re: SYNTAX BUG

; instead of representing an empty regular expression literal, the characters // start a single-line comment. To specify an empty regular expression, use /(?:)/. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https

Re: 'switch' operator improvement

in one case, and that would be if you actually used the fall through mechanism. If you don't fall through, it's just bloat without any gain. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4

Re: Arrays with non-integer properties

serialize such an array. It cannot be serialised using JSON/ES3 literal syntax. Not if you want to retain both the array-ness and the properties with non-array-ish names. -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https

Re: 13.2.2 [[Construct]], constructor, and [[Class]] (was __proto__)

On 23/09/2007, Garrett Smith [EMAIL PROTECTED] wrote: 2. (new function(){}).constructor should be Function. On Sep 23, 2007, at 8:59 AM, liorean wrote: I agree. And in ES3 it is, unless the function either: On 23/09/2007, Brendan Eich [EMAIL PROTECTED] wrote: No: js (new function

Re: 13.2.2 [[Construct]], constructor, and [[Class]] (was __proto__)

be on the object instance *created* by the function. On 9/23/07, liorean [EMAIL PROTECTED] wrote: That argument I agree with. It should be on the instance and not the prototype. On 23/09/2007, Garrett Smith [EMAIL PROTECTED] wrote: Which is different from the way built ins work, but seems OK

Re: Regex: How should backreferences contained in the capturing match they reference to work?

On 9/13/07, liorean [EMAIL PROTECTED] wrote: That the spec doesn't match expectations and that there are behaviours that do make sense to replace it with, coupled with the fact there seems to be no obvious compatibility problem with changing it (otherwise JScript and JavaScriptCore surely

Regex: Named groups/backreferences

construct)? 2. Can (?P=varname) refer to a lexical variable varname from a containing scope, or just to groups within the regex itself? 3. If it can refer to a variable in a containing scope, what constraints are put on the variable type, what conversions are made, etc? -- David liorean Andersson

Re: Regex: How should backreferences contained in the capturing match they reference to work?

, the undefined really means a match with the empty string thing again. I should have known... -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Regex: Named groups/backreferences

Ah, just the answers I wanted to hear:) -- David liorean Andersson ___ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss

Re: Self type

Peter Hall wrote: type B = {b:Self}; On 14/08/07, Cormac Flanagan [EMAIL PROTECTED] wrote: Yes, I think this should be fine. I'm all for allowing recursive structural types e.g. for use as binary trees or linked lists. type BinTree = {sin:Self, dx:Self, value:*}; -- David liorean