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Adding Core Data to existing iPhone project

...o manually import the header in the files you need them. So open up Xcode and look for some file like App_Prefix.pch, by default it's in the Other Sources group. After the UIKit import statement, add the following line: #import <CoreData/CoreData.h> And you should be ready to go. Xcode 4 ...
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Android studio: why are minSdkVersion and targetSdkVersion specified both in AndroidManifest.xml and

I just discovered something weird about Android studio: it has some configuration options in the build.gradle file that override what is specified in the AndroidManifest.xml file. ...
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Finding three elements in an array whose sum is closest to a given number

Given an array of integers, A 1 , A 2 , ..., A n , including negatives and positives, and another integer S. Now we need to find three different integers in the array, whose sum is closest to the given integer S. If there exists more than one solution, any of them is ok. ...
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Understanding MongoDB BSON Document size limit

...r to 20k) So except for truly bizarre situations, it'll work great. And in the exception case or spam, I really don't think you'd want a 20mb object anyway. I think capping trackbacks as 15k or so makes a lot of sense no matter what for performance. Or at least special casing if i...
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How do I avoid capturing self in blocks when implementing an API?

I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
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HTML Entity Decode [duplicate]

How do I encode and decode HTML entities using JavaScript or JQuery? 17 Answers 17 ...
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Table Naming Dilemma: Singular vs. Plural Names [closed]

... Others have given pretty good answers as far as "standards" go, but I just wanted to add this... Is it possible that "User" (or "Users") is not actually a full description of the data held in the table? Not that you should get too crazy with table names and specificity, but p...
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When to use transclude 'true' and transclude 'element' in Angular?

When should I use transclude: 'true' and when transclude: 'element' ? I cant find anything about transclude: 'element' in the angular docs, they are pretty confusing. ...
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How to get RelativeLayout working with merge and include?

...rom using several levels of nested LinearLayouts to one RelativeLayout and have come across a few problems that I haven not been able to find a workaround for... ...
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Difference between a virtual function and a pure virtual function [duplicate]

What is the difference between a pure virtual function and a virtual function? 4 Answers ...