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Hashing a dictionary?
...e hash():
hash(frozenset(my_dict.items()))
This is much less computationally intensive than generating the JSON string or representation of the dictionary.
UPDATE: Please see the comments below, why this approach might not produce a stable result.
...
Store JSON object in data attribute in HTML jQuery
...in the text just use $('#myElement').data('key',jsonObject);
it won't actually be stored in the html, but if you're using jquery.data, all that is abstracted anyway.
To get the JSON back don't parse it, just call:
var getBackMyJSON = $('#myElement').data('key');
If you are getting [Object Objec...
What do commas and spaces in multiple classes mean in CSS?
..._12 .grid_6,
.container_16 .grid_8 {
width: 460px;
}
That says "make all .grid_6's within .container_12's and all .grid_8's within .container_16's 460 pixels wide." So both of the following will render the same:
<div class="container_12">
<div class="grid_6">460px Wide</div&g...
Why can't I overload constructors in PHP?
I have abandoned all hope of ever being able to overload my constructors in PHP, so what I'd really like to know is why .
...
Difference between solr and lucene
...work.
Examples are Solr, Elastic Search, LinkedIn (yes, under the hood), etc..
Check out this article: Lucene vs Solr
UPDATE (6/18/14)
When to use Lucene?
You are a search engineer AND
You are a programmer AND
You want full control over almost all the internals of Lucene AND
Your requirements...
Add a “hook” to all AJAX requests on a page
...ill generically intercept any AJAX globally and not screw up any callbacks etc. that maybe have been assigned by any third party AJAX libraries.
(function() {
var origOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function() {
console.log('request started!');
...
How do I run a Node.js application as its own process?
...ry Linux distribution comes with systemd, which means forever, monit, PM2, etc. are no longer necessary - your OS already handles these tasks.
Make a myapp.service file (replacing 'myapp' with your app's name, obviously):
[Unit]
Description=My app
[Service]
ExecStart=/var/www/myapp/app.js
Restart...
How to configure Visual Studio to use Beyond Compare
... after the project has been setup
(like via SourceTree or the command line etc...) OR edit the .git/config file
(in the solution folder) and remove any overrides for the above settings.
Thanks to minnow in the comments for bringing my attention to it again.
Note: I keep coming across this but I ...
How to do relative imports in Python?
... the module were a top level module, regardless of where the module is actually located on the file system.
In Python 2.6, they're adding the ability to reference modules relative to the main module. PEP 366 describes the change.
Update: According to Nick Coghlan, the recommended alternative is ...
Should I use Vagrant or Docker for creating an isolated environment? [closed]
...ctivity benefits:
Vagrant can launch VirtualBox, VMware, AWS, OpenStack, etc. machines. It doesn't matter what you need, Vagrant can launch it. If you are using Docker, Vagrant can install Docker on any of these so you can use them for that purpose.
Vagrant is a single workflow for all your projec...