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How does MongoDB sort records when no sort order is specified?
When we run a Mongo find() query without any sort order specified, what does the database internally use to sort the results?
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Post data to JsonP
...trol-Max-Age", "1000" ); // time from request to response before timeout
PHP:
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: POST');
header('Access-Control-Max-Age: 1000');
Doing like this, you are opening your server to any post request, you should re-secure th...
node.js fs.readdir recursive directory search
... iteration - this guarantees that every iteration of the loop completes in order. In a parallel loop, all the iterations are started at the same time, and one may complete before another, however, it is much faster than a serial loop. So in this case, it's probably better to use a parallel loop beca...
Set type for function parameters?
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@JeffreySweeney neither is PHP statically typed. But you have the option to do type hinting in php. Have you ever looked at a big nodejs backend application? exactly, each function has arguments, and you have NO clue what each argument is. We are talki...
nginx - nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
...lt_server;
For more information, see:
http://forum.linode.com/viewtopic.php?t=8580
http://wiki.nginx.org/HttpCoreModule#listen
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Is Chrome's JavaScript console lazy about evaluating arrays?
...ated function to clone. If you are only working with simple objects, where order of keys doesn't matter and there are no functions, you could always do:
console.logSanitizedCopy = function () {
var args = Array.prototype.slice.call(arguments);
var sanitizedArgs = JSON.parse(JSON.stringify(a...
How to query nested objects?
...subdocument matches exactly the specified subdocument, including the field order.
In the following example, the query matches all documents where the value of the field producer is a subdocument that contains only the field company with the value 'ABC123' and the field address with the value '123...
LESS CSS nesting classes
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LESS is still awesome, especially the PHP LESS preprocessor, with its modified, more flexible syntax. But until there's some sort of commonly accepted syntax, such problems will arise from time to time. In my view, this one is LESS' only drawback.
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Redirect from an HTML page
...SEO people:
<link rel="canonical" href="http://www.example.com/product.php?item=swedish-fish"/>
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Saving an Object (Data persistence)
...advantage is you don't need to know how many object instances are saved in order to load them back later (although doing so without that information is possible, it requires some slightly specialized code). See the answers to the related question Saving and loading multiple objects in pickle file? f...