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Difference between framework and static library in xcode4, and how to call them

I am quite new to xcode and objective-c. I want to ask a very basic question. 2 Answers ...
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Difference between StringBuilder and StringBuffer

What is the main difference between StringBuffer and StringBuilder ? Is there any performance issues when deciding on any one of these? ...
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Python - doctest vs. unittest [closed]

I'm trying to get started with unit testing in Python and I was wondering if someone could explain the advantages and disadvantages of doctest and unittest. ...
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How to set the prototype of a JavaScript object that has already been instantiated?

...e I have an object foo in my JavaScript code. foo is a complex object and it is generated somewhere else. How can I change the prototype of the foo object? ...
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MySQL maximum memory usage

... MySQL's maximum memory usage very much depends on hardware, your settings and the database itself. Hardware The hardware is the obvious part. The more RAM the merrier, faster disks ftw. Don't believe those monthly or weekly news letters though. MySQL doesn't scale linear - not even on Oracle hard...
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What does do?

... October 2015 Update This answer was posted several years ago and now the question really should be should you even consider using the X-UA-Compatible tag on your site? with the changes Microsoft has made to its browsers (more on those below). Depending upon what Microsoft browsers you...
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Extending from two classes

... You can only Extend a single class. And implement Interfaces from many sources. Extending multiple classes is not available. The only solution I can think of is not inheriting either class but instead having an internal variable of each class and doing more o...
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What is a monad?

...t necessarily “good”. They are a pattern which is sometimes beneficial and sometimes not. Do note that the monadic patten can be combined in a different way: [1,2,3].flatMap(a => [a + 1].flatMap(b => b != 3 ? [b] : [])) Here the binding is nested rater than chained, but the result is the ...
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What is the difference between '@' and '=' in directive scope in AngularJS?

I've read the AngularJS documentation on the topic carefully, and then fiddled around with a directive. Here's the fiddle . ...
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What is the purpose of “&&” in a shell command?

As far as I know, using & after the command is for running it in the background. 9 Answers ...