Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>You can wrap the assignment in a function, or the right-hand side at least:</p> <pre><code> objects[i].callback = (function(i) { return function(e, x, y) { cb(e, x, y, i); })(i); </code></pre> <p>The "outer" anonymous function is called right away, copying the loop variable "i" into an argument (which I also called "i"; some think it's confusing to do that while others say it's confusing <em>not</em> to do it, so you can decide :-) which is then used by the returned "inner" anonymous function.</p> <p>Another approach to this problem would be to use a utility function for this purpose instead of a simple in-line anonymous function. In this case, it's made slightly tricky because you want "i" to be the <em>last</em> parameter of the actual callback function. The <a href="http://osteele.com/sources/javascript/functional/" rel="nofollow">Functional</a> JavaScript library has a cool utility that lets you "pre-populate" selected arguments of a function with fixed values, giving you a function that lets you pass in arguments to the non-fixed ones; it'd look something like this:</p> <pre><code> objects[i].callback = (function(e, x, y, i) { return cb(e, x, y, i); }).partial(_, _, _, i); </code></pre> <p>Whether that's better or worse is a matter of style and opinion.</p> <p><em>edit</em> just had a little more coffee - I think that I was being a little silly thinking that I had to use "partial()" above. The fact that the inner (the "real" function) wants "i" at the end of the parameter list is really not relevant to the way things need to be set up. That above example could also be done like this:</p> <pre><code> objects[i].callback = (function(i, e, x, y) { return cb(e, x, y, i); }).curry(i); </code></pre> <p>which is way less bizarre. (Either would work however. At least, I think they would. :-)</p>
    singulars
    1. This table or related slice is empty.
    1. POJavaScript context in anonymous functions
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USPointy
    1. USPointy
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POJavaScript context in anonymous functions
      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. CO+1 Though I'd prefer to create the outer anonymous function outside the `for` loop.
      singulars
      1. PO
      1. USlonesomeday
    2. CO+1 nifty, oh I love closures
      singulars
      1. PO
      1. USaorcsik
    3. CO@lonesomeday - yes I agree; I would prefer to do this with `.bind()` or something like that. I'll add a mention of that to the answer.
      singulars
      1. PO
      1. USPointy
 

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