Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <ul> <li><p><a href="http://ejohn.org/about/" rel="noreferrer">John Resig</a> (of jQuery fame) has <a href="http://ejohn.org/blog/web-workers/" rel="noreferrer">a bunch of interesting examples of using web workers here</a> - games, graphics, crypto.</p></li> <li><p>Another use is Web I/O - in other words, polling URLs in background. That way you don't block the UI waiting for polling results.</p></li> <li><p>Another practical use: in Bespin, they’re using Web Workers to do the syntax highlighting, which you <em>wouldn’t</em> want to block your code editing whilst you’re using the app.</p></li> <li><p>From <a href="https://developer.mozilla.org/En/Using_web_workers" rel="noreferrer">Mozilla</a>: One way workers are useful is to allow your code to perform processor-intensive calculations without blocking the user interface thread. </p> <p>As a practical example, think of an app which has a large table of #s (this is real world, BTW - taken from an app I programmed ~2 years ago). You can change one # in a table via input field and a bunch of other numbers in different columns get re-computed in a fairly intensive process. </p> <p>The old workflow was: Change the #. Go get coffee while JavaScript crunches through changes to other numbers and the web page is unresponsive for 3 minutes - after I optimized it to hell and back. Get Back with coffee. Change a second #. Repeat many times. Click SAVE button.</p> <p>The new workflow with the workers could be: Change the #. Get a status message that something is being recomputed but you can change other #s. Change more #s. When done changing, wait till status changes to "all calculations complete, you can now review the final #s and save".</p></li> </ul>
    singulars
    1. This table or related slice is empty.
    1. POWhat are the use-cases for Web Workers?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USDarren Sweeney
    1. USDVK
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POWhat are the use-cases for Web Workers?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COGreat links! I had never heard of Workers ... mmm, Workers. (Time to go take a long, hot shower ...)
      singulars
      1. PO
      1. USPeter Rowell
    2. COI know this is a two-year-old answer, but I just wanted to mention that you shouldn't need Web Workers for item #2 (polling URLs). XHR happens asynchronously and doesn't block; there's no need to run XHR requests on a separate thread. (Of course, in a modern app you'd want to use WebSockets instead of polling.)
      singulars
      1. PO
      1. USjosh3736
    3. CO@josh3736 - You are correct but I'm now curious as to whether doing many parallel XHR aync requests can somehow make the browser unhappy? Also, you need local resources to process XHR responses where the workers might be useful.
      singulars
      1. PO
      1. USDVK
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload