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What is scope/named_scope in rails?
I've recently started an internship. My employer uses ruby on rails, and I frequently encounter new syntax that I need to look up to understand. I've googled around for a good explanation of named_scope, but what I've found so far is mostly blog posts giving high praise for it, rather a straight def...
What's the difference between a proxy server and a reverse proxy server? [closed]
...half of another computer.
For the purposes of accessibility, I will limit my discussion to web proxies - however, the idea of a proxy is not limited to websites.
FORWARD proxy
Most discussion of web proxies refers to the type of proxy known as a "forward proxy."
The proxy event, in this case, is...
How to force HTTPS using a web.config file
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In my opinion this is an excellent and valuable answer. When someone googles the topic and is directed to this question I'm glad your answer is here.
– President James K. Polk
Mar 21 '15 at...
Explaining Apache ZooKeeper
...ad problems with the terms "quorum" and "split brain" so maybe I can share my findings with you (I consider myself also a layman).
Let's say we have a ZooKeeper cluster of 5 servers. One of the servers will become the leader and the others will become followers.
These 5 servers form a quorum. Qu...
What exactly do the Vagrant commands do?
...lete list when running vagrant by itself are the docker and rsync ones. On my system, anyway.
That seems to be the definitive answer, now.
share
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foll...
REST HTTP status codes for failed validation or invalid duplicate
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IMO, 422 "Unprocessable Entity" makes much more sense. My reasoning is that it's not that the server refuses to fulfill request, it's that the server can't fulfill the request.
– tybro0103
Aug 23 '13 at 19:16
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How to detect Safari, Chrome, IE, Firefox and Opera browser?
...>What is the name(s) of your browser?</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
if((navigator.userAgent.indexOf("Opera") || navigator.userAgent.indexOf('OPR')) != -1 )
{
...
java: Class.isInstance vs Class.isAssignableFrom
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Both answers are in the ballpark but neither is a complete answer.
MyClass.class.isInstance(obj) is for checking an instance. It returns true when the parameter obj is non-null and can be cast to MyClass without raising a ClassCastException. In other words, obj is an instance of MyClass or...
Can someone explain collection_select to me in clear, simple terms?
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I've spent quite some time on the permutations of the select tags myself.
collection_select builds a select tag from a collection of objects. Keeping this in mind,
object : Name of the object. This is used to generate the name of the tag, and is used to generate the selected value. This c...
Reading file contents on the client-side in javascript in various browsers
...don't know if you still care about this, but I figured that I would update my answer to mention the new File API that does what you're looking for, and is implemented in Firefox, Chrome, and nightly builds of Safari.
– Brian Campbell
Apr 19 '11 at 15:47
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