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Offset a background image from the right using CSS

... It works now on mobile devices (checked on Android, iOS and WindowsPhone). Still Safari 5.1.7 not support background position given like here. – Szorstki Apr 15 '14 at 13:33 ...
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Why use symbols as hash keys in Ruby?

... basically "immutable strings" .. that means that they can not be changed, and it implies that the same symbol when referenced many times throughout your source code, is always stored as the same entity, e.g. has the same object id. Strings on the other hand are mutable, they can be changed anytim...
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What is the “realm” in basic authentication

I'm setting up basic authentication on a php site and found this page on the php manual showing the set up. What does "realm" mean here in the header? ...
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How can I remove a commit on GitHub? [duplicate]

...-i. For example, if it's your last commit, you can do git rebase -i HEAD~2 and delete the second line within the editor window that pops up. Then, force push to GitHub by using git push origin +branchName --force See Git Magic Chapter 5: Lessons of History - And Then Some for more information (i.e. ...
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Tablet or Phone - Android

...user is using a tablet or a phone? I've got problems with my tilt function and my new tablet (Transformer) 30 Answers ...
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Why shouldn't I use “Hungarian Notation”?

... Most people use Hungarian notation in a wrong way and are getting wrong results. Read this excellent article by Joel Spolsky: Making Wrong Code Look Wrong. In short, Hungarian Notation where you prefix your variable names with their type (string) (Systems Hungarian) is ba...
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SQL query for finding records where count > 1

...AYMENT . Within this table I have a user ID, an account number, a ZIP code and a date. I would like to find all records for all users that have more than one payment per day with the same account number. ...
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remove objects from array by object property

...u need to do to fix the bug is decrement i for the next time around, then (and looping backwards is also an option): for (var i = 0; i < arrayOfObjects.length; i++) { var obj = arrayOfObjects[i]; if (listToDelete.indexOf(obj.id) !== -1) { arrayOfObjects.splice(i, 1); i--...
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How to assign colors to categorical variables in ggplot2 that have stable mapping?

...ata frames can become tedious if they are being pulled from separate files and not all factor levels appear in each file. One way to address this is to create a custom manual colour scale as follows: #Some test data dat <- data.frame(x=runif(10),y=runif(10), grp = rep(LETTERS[1:5],each ...
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Difference between a clickable ImageView and ImageButton

...utton.onSetAlpha() method always returns false, scaleType is set to center and it's always inflated as focusable. Here's ImageButton's default style: <style name="Widget.ImageButton"> <item name="android:focusable">true</item> <item name="android:clickable">true&...