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Difference between abstract class and interface in Python
...nd interface is a hairsplitting thing when you have duck typing. I don't know what "substantial" means. It's "real" -- it has substance -- from a design perspective. But from a language perspective there may be no support. You could adopt conventions to distinguish between an abstract class and ...
Eventual consistency in plain English
... rain tomorrow.
Eventually, all of the servers (you, me, your neighbor) know the truth (that it's going to rain tomorrow), but in the meantime the client (his wife) came away thinking it is going to be sunny, even though she asked after one or more of the servers (you and me) had a more up-to-date...
S3 Static Website Hosting Route All Paths to Index.html
...u created as an instance
You should be able to assign the ELB to your DNS.
Now, configure your nginx server to do the following things: Proxy_pass all requests to your CDN (for index.html only, serve other assets directly from your cloudfront) and for search bots, redirect traffic as stipulated by s...
Python progression path - From apprentice to guru
I've been learning, working, and playing with Python for a year and a half now. As a biologist slowly making the turn to bio-informatics, this language has been at the very core of all the major contributions I have made in the lab. I more or less fell in love with the way Python permits me to expre...
Difference between Hashing a Password and Encrypting it
...erse operation (generation of password from converted-word) is impossible. Now even if someone gets access to the database, there is no way that the passwords be reproduced or extracted using the converted-words. In this approach, there will be hardly anyway that some could know your users' top secr...
Stash changes while keeping the changes in the working directory in Git
... (mark the commit with 'stash' tag)
git reset HEAD~ (Now go back to where you've left with your working dir intact)
And so now you have a commit tagged stash at your disposal, it's not possible to do a git stash pop anyway but you can do things like creating patch or resettin...
No secret option provided to Rack::Session::Cookie warning?
...fferent way than intended. It should be ok to just ignore this warning for now until there is a final agreement on how to handle this issue and a fix in place.
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What is the difference between jQuery's mouseout() and mouseleave()?
...eaves the tooltip won't be displayed. This will work 99% of the time.
But now let's say the element you have a tooltip attached to is a button with a click event, and let's also assume this button prompts the user with either a confirm or alert box. The user clicks the button and the alert fires. T...
How can I tell if a DOM element is visible in the current viewport?
...eed to support version of Internet Explorer before 7.
Original solution (now outdated):
This will check if the element is entirely visible in the current viewport:
function elementInViewport(el) {
var top = el.offsetTop;
var left = el.offsetLeft;
var width = el.offsetWidth;
var height = ...
Do declared properties require a corresponding instance variable?
...e Modern Objective-C Runtime (that's either iOS 3.x or greater, or 64-bit Snow Leopard or greater) then you do not need to define ivars for your properties in cases like this.
When you @synthesize the property, the ivar will in effect be synthesized also for you. This gets around the "fragile-ivar"...