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What is the difference between id and class in CSS, and when should I use them? [duplicate]

Here I gave an id to the div element and it's applying the relevant CSS for it. 15 Answers ...
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What's the difference between a Python “property” and “attribute”?

I am generally confused about the difference between a "property" and an "attribute", and can't find a great resource to concisely detail the differences. ...
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What is the difference between Hibernate and Spring Data JPA

What are the main differences between Hibernate and Spring Data JPA? When should we not use Hibernate or Spring Data JPA? Also, when may Spring JDBC template perform better than Hibernate / Spring Data JPA? ...
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Swift Beta performance: sorting arrays

I was implementing an algorithm in Swift Beta and noticed that the performance was very poor. After digging deeper I realized that one of the bottlenecks was something as simple as sorting arrays. The relevant part is here: ...
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Key hash for Android-Facebook app

I'm working on an Android app, in which I want to integrate a Facebook posting feature. I downloaded the Facebook-Android SDK, and I got the readme.md (text file) in there, in which it is mentioned to generate the key hash for Android. How do I generate it? ...
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Django migration strategy for renaming a model and relationship fields

...ome errors if you don't update the names where it's imported e.g. admin.py and even older migration files (!). Update: As ceasaro mentions, newer versions of Django are usually able to detect and ask if a model is renamed. So try manage.py makemigrations first and then check the migration file. ...
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Checkout another branch when there are uncommitted changes on the current branch

... Git version 2.13, to fix up some problems with the arguments to git stash and allow for new options. Both do the same thing, when used in the basic ways. You can stop reading here, if you like! If Git won't let you switch, you already have a remedy: use git stash or git commit; or, if your chan...
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MySQL pagination without double-querying?

...dering if there was a way to get the number of results from a MySQL query, and at the same time limit the results. 9 Answer...
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Add regression line equation and R^2 on graph

I wonder how to add regression line equation and R^2 on the ggplot . My code is: 9 Answers ...
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Failed to load the JNI shared Library (JDK)

... a 32bit function wants to call a 64bit one, or alike. Same with alignment and datasizes and everything. I guess I dont have to tell anything more =P – imacake Mar 17 '12 at 17:15 ...