Recalling the lambda notation…

Hello again, this is Peter Gurevich, Performance PM (among other things) for IE7.  We have heard a lot of requests to improve our Jscript engine, especially now that AJAX sites are becoming more prevalent on the web.  I want you all to know that we have been listening and have recently made some great fixes to our engine to improve the garbage collection routine and to reduce unbounded memory growth.  You should see noticeable improvements on AJAX sites in the Release Candidate we shipped last week.  I want you also to know that performance of the object model and JavaScript engine will be an area that we focus on strongly in future releases.

Read the rest here.

I found an interesting guide for (not obvious) Javascript code optimization.

Remember these quotes before reading the article:

• “Premature optimization is the root of all evil” - Donald Knuth
• “On the othere hand, we cannot ignore efficiency” - Jon Bentley

The article is here.

• New icons:

Taken from IE7 blog.

Last week IE Team has released a new version of IE Developer Toolbar. Althrough it’s still beta 2 (as latest), it’s a new build.

You can download it from here.

This Beta 2 version of the toolbar contains functionality and stability enhancements over previous versions and includes the following improvements.

– You can now selectively enable and disable CSS parsing.
– The Misc menu contains a color picker.
– Several link reports are available.
– When you select an element in the DOM element tree list, the selected element scrolls into view if it is not already visible in the browser window.

Download it from here.

IE7 and Firefox teams decided to use a common icon for RSS feeds, as you can see here.

Microsoft Corp. postponed the introduction of the next test release of its Internet Explorer 7 Web browser until sometime in 2006, according to comments posted to the company’s site for software developers.

Here.

An useful tool for who develops web pages. It’s a plugin for Internet Explorer (like Web Developer for Mozilla Firefox) that adds several features to the browser of Microsoft:

• Explore the DOM
• Validation of HTML, CSS, RSS
• Manage images
• Cache information
• Many other features

You can download it from here.