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Serializing JavaScript Promise Execution

2013 Aug 10, 3:07
Occasionally I have need to run a set of unrelated promises in series, for instance an object dealing with a WinRT camera API that can only execute one async operation at a time, or an object handling postMessage message events and must resolve associated async operations in the same order it received the requests. The solution is very simply to keep track of the last promise and when adding a new promise in serial add a continuation of the last promise to execute the new promise and point the last promise at the result. I encapsulate the simple solution in a�simple constructor:

    function PromiseExecutionSerializer() {
var lastPromise = WinJS.Promise.wrap(); // Start with an empty fulfilled promise.

this.addPromiseForSerializedExecution = function(promiseFunction) {
lastPromise = lastPromise.then(function () {
// Don't call directly so next promise doesn't get previous result parameter.
return promiseFunction();
});
}
}

The only thing to watch out for is to ensure you don't pass the result of a previous promise onto a subsequent promise that is unrelated.
PermalinkCommentsasync javascript promise technical

wired: [via motherjones]: theweekmagazine: Sticking to an...

2012 Jun 7, 3:29


wired:

[via motherjones]:

theweekmagazine:

Sticking to an exercise routine takes dedication, and many fitness junkies swear that a running companion can be a huge help. That’s why researchers have developed “Joggobot,” a quad-rotor helicopter drone designed to motivate joggers by flying in front of them. 

The aerial robot uses its camera to spot a colorful pattern on a T-shirt worn by the jogger, and flies at a safe distance ahead. The runner can control Joggobot using a smartphone: In “companion mode,” the drone simply maintains the jogger’s pace; in “coach mode,” it pushes its human trainee a little faster.

Don’t worry, there’s a video

Science!

Maybe it should chase you instead?

PermalinkCommentshumor exercise robot future video

(via Descriptive Camera) A digital camera sends photos to...

2012 Apr 25, 4:23


(via Descriptive Camera)

A digital camera sends photos to Mechanical Turk service to generate a textual description and print the result on a thermal printer.  Thus a camera that prints out a textual description of what you photographed.

PermalinkCommentshumor camera photo mechanical-turk

BBC News - Polar bears get the better of spy cameras

2011 Mar 10, 6:14Polar bears destroy hiddern cameras (filming them for Science!) It is a well known fact that polar bears are very protective of their rights to privacy.
PermalinkCommentsvideo science nature animals bbc humor

Download a new Radiohead concert film for free | Music | Newswire | The A.V. Club

2010 Sep 4, 8:10"Reminiscent of the Beastie Boys "Awesome; I Fuckin'Shot That", more than 50 Radiohead fans captured the band's Aug. 23 show in Prague on Flip cameras, with the resulting footage later assembled into the new Live In Praha DVD."
PermalinkCommentsradiohead music video youtube

racer

2010 Aug 4, 2:26
Video of racer 0.2 a video game made real sort of. Arcade racing cabinet hooked up to an RC car with wireless video camera placed on a cardboard track.
PermalinkCommentshumor awesome 3d game videogame video cardboard irl

Schneier on Security: Alerting Users that Applications are Using Cameras, Microphones, Etc.

2010 May 24, 6:26"What You See is What They Get: Protecting users from unwanted use of microphones, cameras, and other sensors," by Jon Howell and Stuart Schechter.

"We introduce the sensor-access widget, a graphical user interface element that resides within an application's display. The widget provides an animated representation of the personal data being collected by its corresponding sensor, calling attention to the application's attempt to collect the data."

Not sure how well that scales...PermalinkCommentstechnical security privacy research

How to Google Maps on Vimeo

2009 Aug 31, 4:53From Ira as part of The Balloon Project "... took the lo-fi diy map making essentials (portable helium tank, party balloons, and a disposable video camera) to Paris, France, where they launched a video camera into the sky not knowing where it would go, and created some very unique aerial cartography of the Place de la Concorde.' I'd love to see this run through photo stitching software like Photosynth and then layered on Google Maps.PermalinkCommentsmap balloon art ira-mowen france paris

In Which She's Every Woman - Today - This Recording

2009 Aug 21, 3:31"A woman approaches me and tells me that she's with Getty Images. They're shooting stock photos in the park today, would I be willing to pose?" Then finds her photo on tea, camera ads, Quicken's website, etc.PermalinkCommentshumor photo advertising getty via:waxy

The Future of Data Tags: Bokodes | Brain Pickings

2009 Aug 5, 7:57"Ten times smaller than barcodes, Bokodes’ low-cost optical design can be read from as far as 4 meters away, much farther than barcodes, by taking an out-of-focus photo with any off-the-shelf camera." Love for stuff like this to catch on, however compared to QR codes, these are much more difficult to produce than barcodes in that you can't just print them out and they require changes to the photography technique (must be out of focus) rather than just analyzing any photograph of a barcode. They seem to be solving slightly different problems.
PermalinkCommentsqrcode qr barcode camera information design bokode augmented-reality technical

Coding4Fun : Look at me! Windows Image Acquisition

2009 Jun 20, 9:43How to use the WIA APIs in C#. WIA is Windows API to get images from scanners and cameras. And, as I found out, if you want to use the API in PowerShell try '$deviceManager = new-object -ComObject WIA.DeviceManager'PermalinkCommentsvideo scanner api wia csharp howto programming camera image photo .net webcam technical

Free OCR software? You may already have it... - Jon Galloway

2009 Jun 20, 9:39If you have Office installed you may have an OCR library sitting on your hard drive just waiting to be used via C#...PermalinkCommentsocr microsoft office .net automation scanner camera windows technical

IR Ink

2009 May 29, 9:01"These inks are completely invisible to the human eye yet can be seen by using a device which can see in the infrared range - such as our modified cameras and camcorders. These inks do not fluoresce in the visible range, cannot be seen with ultraviolet lights and cannot be seen by the human eye alone." Via and not via .PermalinkCommentsir ir-paint ink purchase

Infrared Paint Link Roundup

2009 May 29, 2:50

I like the idea of QR codes, encoding URLs and placing them on real world objects, but the QR codes themselves are kind of ugly. To make them less obvious I thought I could spray QR codes on to an object with an infrared reflective paint and shine infrared light on the QR codes, since most cameras, for instance the camera in my G1 phone, pick up infrared that our eyes do not.

In my search for infrared paint I've found a seller of IR ink (via programming forum) and an Infrared Paint Recipe (via IR FAQ).

In looking for this paint I've found that it comes up a lot in relation to the military for things like paint markers that are visible at night with proper equipment, and paint that absorbs IR light to make vehicles less obvious to night vision goggles. Even though the first reflects infrared light and the second absorbs it websites end up refering to both as infrared paint which made it difficult to search.

Additionally I found links to some other geeky infrared projects:

PermalinkCommentsir paint technical ir infrared qr qr code

Night Run II, 1st Half on Flickr - Photo Sharing!

2009 May 6, 12:56Time lapse photography from the perspective of a large ship at night in Texas. "The camera was fastened to an outside rail and set to take a photo every six seconds. Quicktime then assembled the photos into a .mov file that plays back at 12 frames per second. So, one minute of movie time represents 72 minutes of trip time on the channel. The first half begins just below the Port of Houston Authority Turning Basin (the very end of the channel) and continues down to Green's Bayou."PermalinkCommentsflickr video photography travel camera texas ship boat

Awesome Spokesmen Billy Mays and Vince Offer

2009 Apr 8, 4:06
Vince Offer photo from onebutan-iphoneBilly Mays photo from onebutan-iphone

There can be no doubt that infomercial pitchmen Billy Mays and Vince Offer are awesome, but how can I decide which is my favorite?

Infomercial Performance.
Among other things they sell Zorbeez and ShamWow respectively, both of which are absorbant towels so first up I can get a somewhat apples-to-apples comparison on informercials for comparable products. Thankfully someone has created a Vince Offer vs Billy Mays youtube video featuring these informercials.

Billy has an upbeat yell to everything he says while Vince has an endearing condescension to his "You followin' me camera guy?" In the end I must give this one to Vince Offer.

Extracurriculars.
Billy Mays has a new show Pitchmen on the Discovery Channel, a reality show involving folks pitching inventions to the pitchmen Billy Mays and someone else. Vince Offer was arrested for assaulting a prostitute. A clear win for Billy.
Intra-pitchman Interactions.
Billy has challenged Vince to a pitchman-off which on the surface sounds like a point for Billy, but if you listen to the challenge Billy says that Vince attempted to extend the olive branch. Billy Mays calls out Vince on the Adam Corolla Show
PermalinkCommentspersonal2 infomercial stupid vince offer billy mays

meteotek08's photosets on Flickr

2009 Mar 18, 9:35Team of teenagers attach camera to weather balloon and send it to space!PermalinkCommentsphotography photos via:boingboing.comments science space flickr

MyFonts Blog - Blog Archive - Introducing WhatTheFont for iPhone!

2009 Feb 11, 10:05"With the iPhone version of WhatTheFont you can use the phone's built-in camera to photograph the text in question (or choose an existing image from your photo albums)... After confirming which characters are used in the image, the app provides a list of possible matching fonts."PermalinkCommentsfont iphone camera typography

Phone Replacement For Grocery Card

2008 Dec 29, 11:04

My QFC grocery card barcode is 4 46600 03506 4.Another use for my new phone is as a replacement for my grocery card, those little plastic cards with a bar code on them that the grocery store gives you to track your purchasing habits. I've previously gone to great lengths to increase space in my pockets by removing infrequently used keys and reducing my wallet to the essentials. So I was glad to get rid of the QFC card and replace it with a photo of its bar code on my phone. Since the important part of the QFC card is the bar code which is just an image of black lines, if your phone has a camera and a screen with a reasonable resolution you can take a photo of the bar code and later display it to a reader. I've so far been able to try it once and successfully at a normal checkout line, but the reaction from the checkout lady was enough that I may in the future just keep a card in my car. She was very excited, asked me what kind of phone I had, called over another checkout person and generally made a large fuss. Also the checkout people generally don't mind giving me a new card if I don't have one with me.

PermalinkCommentstechnical boring barcode phone

G1 Android Phone

2008 Nov 9, 11:29

T-Mobile G1 Wallpapers by romainguy
I finally replaced my old regular cell-phone which was literally being held together by a rubber band with a fancy new G1, my first Internet accessible phone.

I had to call the T-Mobile support line to get data added to my plan and the person helping me was disconcertingly friendly. She asked about my weekend plans and so I felt compelled to ask her the same. Her plans involved replacing her video card so she could get back to World of Warcraft and do I enjoy computer gaming? I couldn't tell if she was genuine or if she was signing me up for magazines.

I was with Sarah in her new car, trying out the phone's GPS functionality via Google Maps while she drove. I switched to Street View and happened to find my car. It was a weird feeling, kind of like those Google conspiracy videos.

The phone runs Google's open source OS and I really enjoy the application API. Its all in Java and URIs and mime-types are sort of basics. Rather than invoking the builtin item picker control directly you invoke an 'intent' specifying the URI of your list of items, a mime-type describing the type of items in the list, and an action 'PICK' and whatever is registered as the picker on the system pops up and lets the user pick from that list. The same goes if you want to 'EDIT' an image, or 'VIEW' an mp3.

I wanted to replace the Google search box gadget that appears on the home screen with my own search box widget that uses OpenSearch descriptors but apparently in the current API you can't make home screen gadgets without changing parts of the OS. My other desired application is something to replace this GPS photo tracker device by recording my location to a file and an additional program on my computer to apply those locations to photos.

PermalinkCommentstmobile personal api phone technical g1 android google
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