Tobiasz Cudnik's shared items in Google Reader

what’s new in Firebug 1.5?

2009-11-17T14:57:22Z

This is a re-post from Rob Cambell’s personal weblog. Firebug 1.5 is the first release that will work with the upcoming Firefox 3.6 and also also works with Firefox 3.5. It’s currently in beta and will be available before the release of Firefox 3.6.

As of this minute, Firebug 1.5 is sitting comfortably in its third beta and available for download. This version is shaping up to be our best release yet and initial reports have been very positive regarding its stability, UI improvements and new features. So let’s take a look at some of the new features.

Improved Net Panel accuracy

One of the problems with Firebug’s Net panel in the past has been inaccurate timings. Because Firebug is entirely written in JavaScript some network and UI activity could block Firebug during long operations and cause the timings displayed there to be less than accurate. This has finally been corrected with the landing of a new service called the http-activity-distributor. For more details on the implementation and use of the newly-improved Net panel, see Honza’s blog post on the topic.

New Break Functionality

In Firebug 1.4, we introduced the concept of “break-on-next” to the Script panel. This was a “pause” button sitting between the inspect icon and the Console tab. In 1.5, we’ve extended this concept to the Console, HTML and Net panels to allow more exciting types of breaks.

In the Console, we’ve replaced the mini-menu Break-on-Errors option with the pause button. The reasons for this possibly contentious change was it made for a more consistent use of menus and the break button. Now, to enable Break on Errors, select the Console panel and hit the pause button. You’ll see that familiar glow to indicate that it’s waiting for an error. Now whenever an error occurs on the page, you’ll be dropped into the script panel at the line where the error occurred.

The HTML panel’s break button is a little different. This is the Break-on-Mutation feature. When this is enabled, whenever a bit of JavaScript modifies an HTML element, you’ll be taken to the Script panel and the modifying code while be highlighted. Related to this, you should be able to see modified HTML occurring in real-time in the HTML panel with affected elements and attributes being highlighted as they change in the page.

Finally in the Net panel, the break button acts as a Break-on-XHR button. This is intended to help debug AJAX apps by allowing you to halt the debugger during an XmlHttpRequest send. As in the other break types, you’ll be transported to the script panel when an XHR object fires off its request and you’ll be given the option to copy the message.

John Barton and Honza have written a great interactive demo page describing these new features on getfirebug.com.

Mixed Development

We made a few tweaks to the UI in this version. We replaced the “Off” label with a single “power” button (or window close button on Mac) as promised during the last release.
Kevin Decker added the search panel originally intended for version 1.4 with some nice options.
Persist option on Console and Net Panel. Save your data!
Improvements to the Inspector.
Still more to come. Between now and final release we plan on hunting down a few more bugs to make this even more stable. Feel free to download and give it a try.

Mockingbird: Cappuccino-based visual mockup tool

2009-11-06T11:19:07Z

Mockingbird is a nice Cappuccino based tool that lets you quickly mockup a wire-frame on the Web.

Fire it up, build out your "pages", drag and drop your UI, and then share it with your clients!

Build Your Own 3D Camera Rig with Two Hacked Canon Cameras [Camera Hacks]

2009-11-22T00:00:00Z

You don't need to spend a mint on the new 3D-capable camera from Fuji. You can throw two basic Canon point-and-shoot cameras together with $20 worth of parts and make your own for 3D fun.

You'll need a pair of matching Canon PowerShot cameras that have modified firmware—the CHDK (Canon Hack Development Kit) we shared with you last year. You need two cameras in order to simulate the view from the left and right eye.

In addition to the two cameras you'll need about $20 worth of hardware that includes a simple bracket made with basic hardware store parts and a USB trigger button with dual outputs. The USB trigger will take a tiny bit of electronics know-how but if you can wire a lamp you can turn an Altoids tin and a simple circuit board into a dual-trigger for your 3D camera rig.

Once you've got the camera and trigger assembled you're in business on the taking-the-pictures side of things. On the post-processing side of things you'll need to offset the image with proper coloration for 3D glasses—the most popular tool is a free application called StereoPhoto Maker. Using StereoPhoto Maker you can combine and tweak your images for maximum 3D effect. Check out the full tutorial at MaximumPC for a detailed build guide and lots of photos.

Have experience with 3D photography or video? Let's hear about it in the comments.

How to Build Your Own 3D Camera Rig for Under $20 [via Gizmodo]

Sewell's DisplayLink-enabled USB-to-DVI / VGA / HDMI adapter does 2,048 x 1,152

2009-11-22T07:20:00Z

It's been a hot minute since we've seen a totally useful display adapter from Sewell, but the outfit's latest is certainly worth a gander if you've been yearning to push high-def signals through USB. The Minideck USB-to-DVI / VGA / HDMI (video only) adapter utilizes the DisplayLink DL-195 chip, which provides support for resolutions as high 2,048 x 1,152, so 1080p and 1,920 x 1,200 LCD monitors are well taken care of. Best of all, this thing doesn't require a Core i7 rig to operate, so your 5 year old corporate laptop should be plenty to handle the rigors of powering a 24-inch LCD via a dusty old USB socket. It's all yours right now for $99.95.

Sewell's DisplayLink-enabled USB-to-DVI / VGA / HDMI adapter does 2,048 x 1,152 originally appeared on Engadget on Sun, 22 Nov 2009 02:20:00 EST. Please see our terms for use of feeds.

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Riot.js: JavaScript port of the lean fast unit test framework

2009-11-05T11:12:09Z

Riot started as a lean Ruby unit test framework with tests that have a style like this:

PLAIN TEXT

RUBY:

Alex Young has now implemented Riot.js which brings you the lean framework in a format that can run stand-along via Rhino, or through the browser itself with tests that look like:

PLAIN TEXT

JAVASCRIPT:

Riot.run(function() {
context('basic riot functionality', function() {
given('some simple equality tests', function() {
asserts('a simple truth test should return true', true).isTrue();
asserts('isNull is null', null).isNull();
});
given('another context', function() {
asserts('equals should compare strings as expected', 'test string').equals('test string');
});
given('a context concerned with functions', function() {
asserts('asserts() should allow functions to be compared', function() {
return 'test string';
}).equals('test string');
});
});
given('yet another context', function() {
asserts('equals should compare strings as expected', 'test string').equals('test string');
});
});

Émile: Stand-alone CSS animation JavaScript mini-framework

2009-11-09T11:03:08Z

I am sitting next to Thomas Fuchs at JSConf.EU and he just posted about his new library agnostic CSS animation framework called Émile (named after Émile Cohl, an early animator).

Émile has a full set of CSS properties for animation (length-based and colors) and includes easing and callbacks all with less than 50 lines of code!

Check out an example:

PLAIN TEXT

HTML:

<script src="emile.js"></script>
<div id="test1" style="position:absolute;left:0px;background:#f00;opacity:0">test</div>
<div id="test2" style="border:0px solid #00ff00;position:absolute;left:0px;top:400px;background:#0f0">test</div>
<script>
emile('test2', 'left:300px;padding:10px;border:50px solid #ff0000', {
duration: 500,
after: function(){
emile('test1', 'background:#0f0;left:100px;padding-bottom:100px;opacity:1', {
duration: 4000, easing: bounce
});
}
});
function bounce(pos) {
if (pos <(1/2.75)) {
return (7.5625*pos*pos);
} else if (pos <(2/2.75)) {
return (7.5625*(pos-=(1.5/2.75))*pos + .75);
} else if (pos <(2.5/2.75)) {
return (7.5625*(pos-=(2.25/2.75))*pos + .9375);
} else {
return (7.5625*(pos-=(2.625/2.75))*pos + .984375);
}
}
</script>

Nice work Thomas!

Amarok 2.2.1 "Weightless" released

2009-11-18T11:47:24Z

Amarok version 2.2.1 has been the released by the Amarok team. It includes a lot of improvements to podcast handling, much faster collection scanning as well as the ability to automatically update scripts.

Head over to the release announcement, download it and enjoy rediscovering music.

Chrome OS Virtual Machine Build Ready for Your Testing [Downloads]

2009-11-20T05:28:40Z

If you're aching to try out Chrome OS after taking a glimpse earlier today, friendly power user Mark Renouf has compiled a VMware image of Chrome OS for testing out in your virtual machine environment.

While Chrome OS is far from ready for the regular user, lots of us are aching to play around a little with Google's young operating system. This virtual machine-friendly build looks like a good way to do just that, and you can grab it via BitTorrent now. From The Pirate Bay page:

This is a ChromeOS image converted to VMware .vmdk file.

It was built from instructions provided on the ChromiumOS developers site:

http://sites.google.com/a/chromium.org/dev/chromium-os/building-chromium-os/build-instructions

Built from sources retreived on 11/19/2009, following the announcement of the opening of the ChromeOS source code.

Shared user password (for sudo, etc is 'chromeos')

If you give it a download and try it out, let's hear how it worked for you (and share any images you manage to grab) in the comments.

Update: Alternately, you can download a VMware build directly from web site gdgt as well, "no strings attached" (as long as you don't consider creating an account at gdgt and giving them your email address "strings").

ChromeOS [The Pirate Bay via ironicsans]

Google Navigation is a Total GPS Replacement—As Long As You're Connected [GPS]

2009-11-19T17:00:00Z

My wife bought me a Garmin GPS for Christmas last year. After showing her Google Navigation on my G1, she asked if her gift is obsolete. Sorry to say but, for anything but long-distance treks, Google's Navigation is good enough.

I've been using Google Maps Navigation on an HTC G1, which is not the higher-powered, bigger-screened Droid it was designed for. That said, Navigation has delivered that "I'm living in the future" feeling that makes you start mentally marking down the margin you paid for your gadgets. It combines a slew of services Google has recently refined—overhead maps and street-level images, voice recognition, local searches with plain English queries, and traffic data from real drivers—and presents them in an interface that's surprisingly inviting and useful, given Google's tendency for the Hey It Works school of design. More than anything, though, it's free, the data it serves up is free, and it'll always remain up to date for free.

That's not to say that my Garmin, a Nuvi 350 model bought for about $100, doesn't do its primary job, and do it well once it's working. But Google's free offering has made my phone the go-to gadget for navigating across the city or on same-day car trips. For long drives across regions without great cellular coverage, you might still want a stand-alone GPS unit. Navigation downloads all the map data over your phone's data connection, while most GPS devices store gigabytes worth of map data locally.

Update: A Google rep wrote to us, stating that while Navigation requires a data connection to plot its routes, search, and make detours and re-routes. But, once you've been driving a while, "as long as you don't stray from the route, you will continue to get voice guidance even without a data connection."

Assuming Google intends to make Navigation available on any future Android phone, and maybe iPhones as well, GPS navigation devices are going to have to develop features that add cleverness and value to compete for the crowd that's just looking for the local Marriott.

Using Google Maps Navigation

From the video tour Google offered up with the Droid launch, it's easy to assume that Navigation offers a turn-by-turn experience inside its Street View images—kind of like driving through a first-person shooter game with a thick blue line. It's disappointing when you realize it doesn't do live turn-by-turn in Street View; instead it only gives you the handy view when you click to see an upcoming turn or intersection. Still, Navigation's driving view is just as good as a GPS unit's, and at times even a little better.

The big advantages Google pushes have to do with local information. Inside the app itself, that means putting Google's "Layers" on top of your standard three-quarter view of the streets. You can have live traffic indicators overlaid on your streets, see your maps in satellite pictures, or have nearby restaurants, gas stations, banks, ATMs, and hotels show up. While you're navigating, you can also tap the voice search button and find something nearby that you're looking for. High-end GPS models likely offer similar voice-activated search, but likely not at the speed and with the range of results Google provides.

What really impressed me, though, was the actual turn-by-turn experience. The map automatically zooms in and out as your speed fluctuates, giving you a tight, precise view of where you're supposed to turn when you're slowing down for an off-ramp or intersection, but pulling back when you're cruising the highway and looking for the bigger road changes. The digital voice reading your directions is ever-so-slightly distorted compared to others I've heard, but you can understand it without problems. If you can't live without your digitized British female tour guides, well, I understand.

Data pulling, road refreshes, and GPS location awareness were definitely at par with my stand-alone unit, even on an EDGE connection, beneath a city's taller buildings. This will vary from city to city, and from phone to phone, of course—but I'd consider using a hacked G1 in Buffalo, NY a fairly good test of both location and lag-ridden hardware. Since Navigation runs as a background process, you can take phone calls over your speaker or through a Bluetooth headset, and Navigation will cut in (on your audio only) when it's time to make a turn. You can also switch out of Navigation's view to perform other tasks, if you feel like callously endangering the lives of everybody on the road around you with certain distraction and delayed response time.

Navigation does warn you about that distraction danger, by the way, when you first launch it, but only that one time. Whether that's an advantage over GPS units' regular reminders depends on your point of view. Actually, let's go ahead and assume you like fewer nag screens.

If you're driving somewhere without EDGE or 3G data coverage on your carrier, Maps Navigation will eventually run out of maps to show you. There might be local maps packs to pull down in the future, and wireless data coverage might eventually bridge its gaps over the last mile. If rural coverage is a non-starter for you, you weren't likely to buy a smartphone anyways. Otherwise, Navigation probably does everything your stand-alone GPS unit does.

Using a GPS device

The GPS device I'd been using for the better part of a year, a Garmin Nuvi 350, is far from the top of the line. Most readers will be familiar with how one works, even if they haven't owned one, so I'll just say what's different and unique.

The obvious advantages are that you're not draining, or at least continually charging, your main cellphone's battery, and that a GPS unit can dish out directions almost anywhere, without any need for a wireless data connection. Depending on your phone, the screen on a GPS unit may be bigger, and, on my Nuvi, at least, the "Night Mode" that pops on at a dynamic sunset time is certainly very helpful. GPS units also come with all the hardware they need to mount to your window or dashboard, and for those afraid of their own distractions, don't ping you when new email or text messages come in.

The chart

Enough jibber-jabber from one geeky tester. Here's the head-on comparison between my GPS and my hacked G1 Navigation system. Click to enlarge, unless you've got Superman eyes.

For an alternate take on Google Maps Navigation by the (admittedly more GPS-savvy) Gizmodo crew, read Wilson Rothman's Maps Navigation feature review.

I have far from the perfect phone or GPS unit to make my judgments in the ideal realm, but I also consider myself a regular old consumer (as opposed to a latest-and-greatest gadget guy). Could you abandon your stand-alone GPS unit, or take it off your wish list, for Google's Navigation? Give us your take in the comments.

Google's Chrome OS revealed -- with video!

2009-11-19T17:53:00Z

Google had a low-key event today to preview Chrome OS, its new operating system based on Linux and the Chrome browser. Things are still pretty early -- it's not even in beta yet, let alone on shipping products -- but that's the first official screen shot right there, and the big features are all roughed out. The entire system is web-based and runs in the Chrome browser -- right down to USB drive contents, which show up in a browser tab, and the notepad, which actually creates a Google Docs document. Web apps are launched from a persistent apps panel, which includes Gmail, Facebook, Twitter, and Hulu, among others, and background apps like Google Talk can be minimized to "panels" that dock to the bottom of the screen. Local storage is just used to speed up the system -- everything actually lives in the cloud, so all it takes to swap or borrow machines is a login, and you're good to go. Google also said it's "very committed" to Flash, and that it's looking to hardware accelerate whatever code it can -- although Google didn't have a solid answer to give when asked about Silverlight. Overall, Google was upfront in saying that Chrome OS is focused on very clear use cases for people who primarily use the web, and that it's not trying to do everything: "If you're a lawyer, editing contracts back and forth, this will not be the right machine for you."

As far as going to market, Google's not talking details until the targeted launch at the end of next year, but Chrome OS won't run on just anything -- there'll be specific reference hardware. For example, Chrome OS won't work with standard hard drives, just SSDs, but Google is supporting both x86 and ARM CPUs. That also means you won't be able to just download Chrome OS and go, you'll have to buy a Chrome OS device approved by Google. Interesting move, for sure -- but since the entire OS is totally open-source as of today, we're sure it'll be hacked onto all kinds of hardware soon enough. (And for the record, the demo was run on an off-the-shelf Eee PC.) Check Google's intro videos after the break!

Gallery: Google Chrome OS event

Gallery: Google Chrome OS PR screenshots

Continue reading Google's Chrome OS revealed -- with video!

Google's Chrome OS revealed -- with video! originally appeared on Engadget on Thu, 19 Nov 2009 12:53:00 EST. Please see our terms for use of feeds.

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NGiNX HTTP Push Module

2009-11-19T11:15:48Z

Even PHP developers can write web applications that use all sorts of fancy long-polling.

That is what Leo said about his NGiNX HTTP push module:

This module turns Nginx into an adept HTTP Push and Comet server. It takes care of all the connection juggling, and exposes a simple interface to broadcast messages to clients via plain old HTTP requests. This lets you write live-updating asynchronous web applications as easily as their old-school classic counterparts, since your code does not need to manage requests with delayed responses.

NHPM fully implements the Basic HTTP Push Relay Protocol, a no-frills publisher/subscriber protocol centered on uniquely identifiable channels. It it an order of magnitude simpler and more basic than similar protocols (such as Bayeux). However, this basic functionality together with the flexibility of the server configuration make it possible to reformulate most HTTP Push use cases in Basic HTTP Push Relay Protocol language with very little application- and client-side programming overhead.

Configure NGiNX and write some code to talk to it.

Myka ION brings Hulu, Boxee and other web content to your TV

2009-11-07T00:12:00Z

It's been almost a full year since we heard a peep from the fine folks at Myka, but it looks like we could be talking about 'em a lot more often judging by the specs list on its latest contraption. The simply-titled ION is an Atom-based media PC that relies on NVIDIA's Ion graphics set and a customized interface that brings Hulu, Boxee and pretty much any other web content you can stumble upon to your television. Within, you'll find a 1.6GHz dual-core Atom 330 CPU, up to 4GB of RAM, ten USB 2.0 ports, VGA / DVI / HDMI outputs, an eSATA connector, Ethernet and plenty of audio outputs. The fanless design ensures that things remain quiet, and for those oozing cash, a Blu-ray drive, HDD and WiFi module can be implanted. It's up for order right now starting at $379, but you'll be stuck waiting four to six weeks for delivery.

Gallery: Myka ION brings Hulu, Boxee and other web content to your TV

Filed under: Home Entertainment

Myka ION brings Hulu, Boxee and other web content to your TV originally appeared on Engadget on Fri, 06 Nov 2009 19:12:00 EST. Please see our terms for use of feeds.

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Old Man IE6 shakes fist as Firefox surpasses him in browser share

2009-11-04T20:00:00Z

Filed under: Internet, Browsers

Web designers and standards advocates have tried everything to kill Internet Explorer 6, but it just refuses to die. In fact, Microsoft has extended support for the aging browser until at least mid-2010, and longer for some versions of Windows. However, there is strong evidence that people are coming around to browsers that support standards, don't make web designers cry, and have frickin' TABS, for crying out loud ...

Firefox is now more popular than IE6.

That's right: according to October browser usage stats reported by Ars Technica, the old, incontinent granddad of the browsing world has finally been overtaken by the cool kid with all the rad accessories. Although IE6 still has 23% of the market - sadly, more than any other version of IE - when you add up the usage on every version of Firefox, you get 24.07%, enough to top that single old edition of Internet Explorer.

I assume the shift is accounted for by home web users shifting to newer browsers with the release of Windows 7, because corporate IT departments are still the last bastion of widespread IE6 use. As Ars speculates, high Windows 7 adoption rates could be the stake through IE6's cold, tab-less heart.

Meanwhile, in the Webkit browser wars, Chrome and Safari both made gains this month. Chrome is still growing faster -- right now it's closing in rapidly with 3.58% to Safari's 4.42%.

Old Man IE6 shakes fist as Firefox surpasses him in browser share originally appeared on Download Squad on Wed, 04 Nov 2009 15:00:00 EST. Please see our terms for use of feeds.

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Microsoft - Safari - Internet Explorer - Firefox - Google Chrome

DIY 9V Battery-Powered USB Charger [DIY]

2009-11-04T19:30:00Z

Sure you could go buy a USB charger off the shelf, but what fun would that be? Try making one yourself with a little help from a 9V battery and a few extra components.

This simple hack on a standard 9V battery is an easy one to undertake. It's pretty straight forward, and all it requires is a quick solder to finish things up. It will give you power on the go and a sense of accomplishment for the day upon completing it. Hit up tech weblog anythingbutipod for the simple diagram to make your own.

The battery-powered USB charger isn't an altogether new idea. We'd be remiss not to point out previously mentioned Minty Boost, the classic Altoids-tin-cum-battery-powered charger.

How to Build a 9v Battery Powered USB Charger [anythingbutipod via Gizmodo]

Build a Home Server in a Whisky Bottle [DIY]

2009-11-02T16:30:00Z

Jason Marton was looking for a quieter, hidden home server. So, naturally, he built one into a whisky bottle that blends in with his existing dry bar.

Over at hack weblog MetkuMods Jason Marton explains how he created a personal PC or home server inside of a discarded and (obviously) empty whisky bottle. Although it isn't the first thing one might think of, we have to applaud the creativity and problem solving skills that went into the modification.

The only part of the hack that needed a small amount of professional help was from a glass cutter. After a few failed attempts to use at home tools, he took it in to a local professional to have the holes drilled and cleaned up. Here's the rest of the materials Jason used for his 2006 hack (you can update accordingly), and you can pick up the assembly details over at MetkuMods:

1.5 liter Ballantine's bottle
3.5" SBC board
Intel P3 733EB processor
256MB notebook RAM
40GB notebook HDD
60W mini-ITX PSU
44 pin mini-IDE cable

Would you consider modding your own home server from an unusual object? Or are you okay with your traditional, home office set up? Sound off in the comments.

Note: No Genies were harmed in the making of this craft.

Whisky PC [MetkuMods via Dude Craft]

Introducing the Flexible Box Layout module

2009-10-07T22:55:27Z

One aspect of CSS3 that hasn’t received a lot of attention so far is the Flexible Box Layout module. Already implemented in the Gecko and WebKit engines, in this alternative box model: “… the children of a box are laid out either horizontally or vertically, and unused space can be assigned to a particular child or [...]

New Plugin: SearchTab - v1.0.0

2009-10-20T17:48:09Z

SearchTab
Category: Tools

Description: Search Tab is a Firefox-like search tab

IntelliJ IDEA Open Sourced

2009-10-15T16:06:33Z

I believe you’ll like this announcement — IntelliJ IDEA has just gone open-source! Check out the press release as well as the new jetbrains.org community site for the details. We all will soon get a lot of new friends and colleagues in our IntelliJ IDEA community!

Starting with the upcoming version 9.0, IntelliJ IDEA will be offered in two editions: Community Edition and Ultimate Edition. The Community Edition focuses on Java SE technologies, Groovy and Scala development. It’s free of charge and open-sourced under the Apache 2.0 license. The Ultimate edition with full Java EE technology stack remains our standard commercial offering. See the feature comparison matrix for the differences.

Briefly, in the free Community Edition you’ll get all the Java code support — various refactorings and code inspections, coding assistance; debugging, TestNG and JUnit testing; CVS, Subversion and Git support; Ant and Maven build integration; and Groovy and Scala support (through a separate plugin). To learn more and download the Public Preview of IntelliJ IDEA 9 Community Edition, please visit the IntelliJ IDEA Community Edition site.

The IntelliJ platform, the common foundation for all our IDEs (IDEA, RubyMine, WebIDE or MPS), is being open-sourced under the APL 2.0, too.

You’ll find all the relevant information on how to participate and benefit at JetBrains.org. Check out the FAQ if you have additional questions.

Android 2.0 ported to original T-Mobile G1 (video)

2009-10-30T10:39:00Z

Did you hear? Google's got this little OS called Android that has reached the ripe, mature age of 2-point-Oh. With the giant eclair now sitting on Google's front lawn and the SDK out in the wilds, what was poor Akira Harada to do with all that code knowing that the Motorola Droid was still days away from shipping? Port it to the original Android device, the T-Mobile G1 / HTC Dream, naturally. It's a rough port, not even close to being optimized but it should whet your appetites for all those official updates and delicious home-cooked ROMs we expect to be arriving in the hallowed halls of the XDA forums in the days ahead. See it after the break... roll it!

Continue reading Android 2.0 ported to original T-Mobile G1 (video)

Filed under: Cellphones, Software

Android 2.0 ported to original T-Mobile G1 (video) originally appeared on Engadget on Fri, 30 Oct 2009 05:39:00 EST. Please see our terms for use of feeds.

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Would you like a _ with that $? New library gives JS what it should have

2009-10-29T05:50:06Z

Jeremy Ashkenas and the DocumentCloud team have just released Underscore.js a small library that provides all the functional programming helpers that you expect from Prototype.js or Ruby, but without extending any core JavaScript objects.

Jeremy told us:

This makes it a natural fit alongside jQuery, without having to worry about the conflicts and redundant functionality that using Prototype and jQuery together would entail. For browsers that support the new Javascript 1.6 array functions, it delegates to the native implementations, so your "_.map()" can run at full speed, where available. It's a tiny download, 4k when gzipped. Here's the project page, with full documentation, live tests and benchmarks.

Some of the utilities:

Collections
each, map,
reduce, detect, select, reject, all,
any, include, invoke, pluck, max,
min, sortBy, sortedIndex, toArray,
size

Arrays

first, last,
compact, flatten, without, uniq,
intersect, zip, indexOf,
lastIndexOf

Functions

bind, bindAll, delay,
defer, wrap, compose

Objects

keys, values,
extend, clone, isEqual, isElement,
isArray, isFunction, isUndefined

Utility

noConflict,
uniqueId, template

There has already been nice community patches and suggestions from the community, and Kris Kowal helped make it CommonJS-compliant.

Obviously, other libraries have covered a lot of these before, but it is nice to see a small core covering.