Databases
StackOverflow2013
Postsdbo
POCalling a closure inside a promise callback
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POCalling a closure inside a promise callback
    primarykey
    data
    text
    <p>I'm implementing queue system for a webapp so that HTTP request that are failed are locally stored to be re-executed later on.</p> <p>I have read Mozilla's documentation about <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Closures#Creating_closures_in_loops.3A_A_common_mistake" rel="nofollow" title="closure in loops">closure in loops</a> and then created inner closures.</p> <p>If running this with ids <code>[1,2,3]</code>, the output will be:</p> <pre><code>makeRequestRecovery 1 makeRequestRecovery 2 makeRequestRecovery 3 failure recover id 1 failure recover id 1 failure recover id 1 </code></pre> <p>code:</p> <pre><code>var recoverRequest = function(entry) { console.log('recover id', entry.data.id); $scope.storage.entries.push(entry); }; var makeRequestRecovery = function(entry) { console.log('makeRequestRecovery', entry.data.id); return function() { recoverRequest(entry); } }; $scope.syncEntries = function() { var initialLength = $scope.storage.entries.length; var requestCount = 0; while ($scope.storage.entries.length &gt; 0) { var entry = $scope.storage.entries.pop(0); var recover = makeRequestRecovery(entry); // restangular stuff... // restangular HTTP REMOVE entry.remove().then(function(data) { console.log('success!', data); }, function(data) { console.log('failure', data); recover(); }); requestCount++; if (requestCount &gt; 2 * initialLength) { // too many requests failed break; } } } </code></pre> <p>What changes should I make so <code>recover()</code> is executed with the right value?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USrxdazn
    1. USrxdazn
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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