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Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
...to scale up. Great. You're using Puppet for your EC2 deployment, right? So now you configure your Capistrano files to spin up/down instances as needed; you re-jig your Puppet config so Varnish is aware of web-worker instances and will automatically pool between them. Or you heroku scale web:+5.
Hop...
CORS - What is the motivation behind introducing preflight requests?
...onfused as to the purpose of the preflight request but I think I've got it now.
The key insight is that preflight requests are not a security thing. Rather, they're a not-changing-the-rules thing.
Preflight requests have nothing to do with security, and they have no bearing on applications that ...
How to show the “Are you sure you want to navigate away from this page?” when changes committed?
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Update (2017)
Modern browsers now consider displaying a custom message to be a security hazard and it has therefore been removed from all of them. Browsers now only display generic messages. Since we no longer have to worry about setting the message, it i...
Getting ssh to execute a command in the background on target machine
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I know this is a very old answer of yours, but could you add some comments on why the parentheses way is the best way, what (if any) difference adding nohup makes, and why and when you would use nice? I think that would add a lo...
Javascript library for human-friendly relative date formatting [closed]
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Since I wrote this answer, a well known library available is moment.js.
There are libraries available, but it is trivial to implement it yourself. Just use a handful of conditions.
Assume date is an instantiated Date object for the time you want to make a ...
JavaScript: How to pass object by value?
...var key in obj)
temp[key] = clone(obj[key]);
return temp;
}
Now you can you use like this:
(function(x){
var obj = clone(x);
obj.foo = 'foo';
obj.bar = 'bar';
})(o)
share
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JavaScript data grid for millions of rows [closed]
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(Disclaimer: I am the author of SlickGrid)
UPDATE
This has now been implemented in SlickGrid.
Please see http://github.com/mleibman/SlickGrid/issues#issue/22 for an ongoing discussion on making SlickGrid work with larger numbers of rows.
The problem is that SlickGrid does not virtu...
How to correctly iterate through getElementsByClassName
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for ... of allows you to iterate over NodeList now as in for (slide of slides) Distribute(slide). Browser support is patchy, but if you're transpiling then for ... of will be converted, but NodeList.forEach wouldn't.
– Mr5o1
Oct 22 ...
Simplest way to serve static data from outside the application server in a Java web application
...n the response, you should set the Content-Type header so that the client knows which application to associate with the provided file. And, you should set the Content-Length header so that the client can calculate the download progress, otherwise it will be unknown. And, you should set the Content-D...
Understanding reference counting with Cocoa and Objective-C
...e count is decremented. If, after calling release, the reference count is now zero, then that object's memory is freed by the system.
The basic way this differs from malloc and free is that any given object doesn't need to worry about other parts of the system crashing because you've freed memory ...