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What are the differences between a UIView and a CALayer?

...ed before Core Animation existed, UIViews are intended to be lightweight wrappers around these CALayers. As I describe in the similar question "When to use CALayer on the Mac/iPhone?", working directly with CALayers doesn't give you significant performance advantages over UIViews. One of the reaso...
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Rails - How to use a Helper Inside a Controller

...to include your helper module in your controller: class MyController < ApplicationController include MyHelper def xxxx @comments = [] Comment.find_each do |comment| @comments << {:id => comment.id, :html => html_format(comment.content)} end end end Option 2...
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Entity Framework - Start Over - Undo/Rollback All Migrations

For some reason, my migrations appear to have been jumbled/corrupted/whatever. I'm at the point where I just want to start over, so is there a way to completely undo all migrations, erase the history, and delete the migration code, so I'm back to square one? ...
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Memcached vs APC which one should I choose? [closed]

...way back when.. I want to get the best caching engine available so that my application is really fast. Of course I don't want to over-cache but I want to at least choose the best thing out there. In that article it says Memcached is slow and apc is fast so why is everyone choosing memcached ? ...
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Catching all javascript unhandled exceptions

...o display in an alert box all of the unhandled javascript exceptions in an application. I'd want all of this to be done on the client side, without using any server side code. I'm using MVC3 as an environment. ...
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How do I use vi keys in ipython under *nix?

... Where do I add my custom key binding mappings? – Aravinda Jul 21 '16 at 12:17 My ...
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How to change the background color of a UIButton while it's highlighted?

At some point in my app I have a highlighted UIButton (for example when a user has his finger on the button) and I need to change the background color while the button is highlighted (so while the finger of the user is still on the button). ...
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How to avoid the “Circular view path” exception with Spring MVC test

... the View. The JstlView class extends InternalResourceView which is Wrapper for a JSP or other resource within the same web application. Exposes model objects as request attributes and forwards the request to the specified resource URL using a javax.servlet.RequestDispatcher. A URL for...
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Setting up maven dependency for SQL Server

...ead to a tight coupling with the development machine you are building your app on? I mean if the same project is tried to be build on a different machine, it would not find the jar in the local repo. Wouldn't it be good to add it to the project so that its available on VCS? – O...
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Logging uncaught exceptions in Python

... program is going to terminate due to an uncaught exception, which cannot happen more than once. – Nawaz Nov 16 '16 at 5:36 ...