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What are “decorators” and how are they used?
...orators:
Caching: if we have a service which makes potentially expensive HTTP calls, we can wrap the service in a caching decorator which checks local storage before making the external call.
Debugging/Tracing: have a switch depending on your development/production configuration which decorates yo...
Adding external library in Android studio
I want to add external library https://github.com/foursquare/foursquare-android-oauth to my Android application (I use Android Studio, the instructions provided by lib author for Eclipse didn't work for Android Studio).
...
Rails Migration: Remove constraint
...ke so
change_column :users, :address, :string, :null => true
Docs...
http://apidock.com/rails/ActiveRecord/ConnectionAdapters/SchemaStatements/change_column
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Is it possible to apply CSS to half of a character?
...aders for the blind or visually
impaired
Part 1: Basic Solution
Demo: http://jsfiddle.net/arbel/pd9yB/1694/
This works on any dynamic text, or a single character, and is all automated. All you need to do is add a class on the target text and the rest is taken care of.
Also, the accessibilit...
Store password in TortoiseHg
...nsion instead. See another answer here.
You can change your push URL to https://username:password@hostname.com/repo.
This is explained in Google Code's and Mercurial's FAQs.
EDIT: Mercurial FAQ explains another way to do it:
With Mercurial 1.3 you can also add an auth section to your hgrc fi...
The written versions of the logical operators
...y are real keywords. In C, they're macros defined in <iso646.h>. See http://web.archive.org/web/20120123073126/http://www.dinkumware.com/manuals/?manual=compleat&page=iso646.html.
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Replace only text inside a div using jquery
...textContent.replace('Hi I am text','Hi I am replace');
});
Live example: http://jsfiddle.net/VgFwS/
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Mark error in form using Bootstrap
...highlight the email input box.
This article has a couple good examples.
http://uxdesign.smashingmagazine.com/2011/05/27/getting-started-with-defensive-web-design/
Also twitter bootstrap has some nice styling that helps with that (scroll down to the Validation states section)
http://twitter.githu...
CSS filter: make color image with transparency white
...ilter: brightness(0) invert(1);
}
<p>
Original:
<img src="http://i.stack.imgur.com/jO8jP.gif" />
</p>
<p>
Filter:
<img src="http://i.stack.imgur.com/jO8jP.gif" class="filter" />
</p>
First, brightness(0) makes all image black, except transp...
curl json post request via terminal to a rails app
...ail@email.com","password":"app123","password_confirmation":"app123"}}' \
http://localhost:3000/api/1/users
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