What is the rationale behind entering email twice for registration? [duplicate]

This question already has answers here: What is the purpose of “re-type your email” field? [closed] (3 answers) Closed 10 years ago. Many web sites ask users to enter their email address twice, sometimes taking the trouble to disable copy-pasting. What is the logic behind this? Is this e.g. a security measure? web-applications security ui […]

Is it possible to use RubyGnome2’s/QtRuby’s HTML renderers to make UI for a Ruby script?

I’d like to make a graphical user interface for my script, instead of running it from the console. I’m aware there’s a wealth of UI libraries for Ruby, but I’m quite familiar with HTML and CSS and I’d like to use them for building an interface. So the question is:

How should UI layer pass user input to BL layer?

I’m building an n-tier application, I have UI, BL, DAL & Entities (built from POCO) projects. (All projects have a reference to the Entities).

Author’s work and copyright. in UI design

Typical situation in UI design: you do design of some UI and, say, came up with some bright new idea like “ribbon” or “kinetic scroll past end”.

What is Declarative UI?

I keep seeing this term being thrown around in blogs about frameworks. While I understand the difference between declarative and imperative programming, how does this apply specifically to UI? Why does there appear to be a special term for it? Are these different ‘things’? If so, what is the alternative to Declarative UI and why would I want to use it?

Why doesn’t CSS natively support variables and hierarchy?

I am new to UI development, but I feel very uncomfortable with how CSS works.

Custom templating in a web application

I want to understand the pros and cons in generating dynamic web application controls.

Using only UI testing. Is that Ok?

I am a sole developer working with an offshore employer. I do realize the importance of unit testing (although haven’t practiced before) but currently, the code hasn’t ever been tested. The problem with the code is that it isn’t what I call “been moduled well”, some parts are really messy, extensive use of globals and the code doesn’t really show loose coupling. If I am not wrong, the code might require heavy refactoring before being able to be unit tested. Also, it seems the employer, isn’t quite interested in testing. He rather suggests to spend this time in building features.

UI (Specifically FLEX) automation testing

I was wondering whether the community utilizes automation tests to the extent of UI? Is there some common best practices for testing UI?
Also – the product I’m working on is flex-based. I would love to get ideas how to test it.
Mainly I want to test:

What are examples of automating BDD specifications through the UI layer?

I understand it is better to automate BDD specifications below the user interface whenever possible.