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Multithreading: What is the point of more threads than cores?

... The answer revolves around the purpose of threads, which is parallelism: to run several separate lines of execution at once. In an 'ideal' system, you would have one thread executing per core: no interruption. In reality this isn't the case. Even if you have four cores and four workin...
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How do I reverse a C++ vector?

... All containers offer a reversed view of their content with rbegin() and rend(). These two functions return so-calles reverse iterators, which can be used like normal ones, but it will look like the container is actually rever...
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Debug.Assert vs Exception Throwing

...ated unexpectedly, it makes sense to halt execution by throwing -- I personally would not use exceptions in the place of assertions. Here's why: As others have said, assertions should document situations that are impossible, in such a manner that if the allegedly impossible situation comes to pass,...
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Xcode 4 - slow performance

I have an issue with Xcode 4 really responding very slowly to user interactions, e.g. editing code, scrolling areas etc. This particularly happens with larger scale projects with many controllers/view files etc. ...
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Best way to trim strings after data entry. Should I create a custom model binder?

I'm using ASP.NET MVC and I'd like all user entered string fields to be trimmed before they're inserted into the database. And since I have many data entry forms, I'm looking for an elegant way to trim all strings instead of explicitly trimming every user supplied string value. I'm interested to ...
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Linux find file names with given string

I'm on Ubuntu, and I'd like to find all files in the current directory and subdirectories whose name contains the string "John". I know that grep can match the content in the files, but I have no idea how to use it with file names. Any help would be appreciated. ...
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Moving project to another folder in Eclipse

I generally have my working projects sitting on folders on my Desktop. When they are completed I just move them to a c:\dev\ . The thing is I'm doing it in a rather archaic way. ...
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What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL?

What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL? 6 Answers ...
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Width equal to content [duplicate]

...ed elements, see this link for different techniques: http://css-tricks.com/all-about-floats/) Demo: http://jsfiddle.net/CvJ3W/5/ Edit If you go for the solution with display:inline-block but want to keep each item in one line, you can just add a <br> tag after each one: <div id="contai...
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How can I do DNS lookups in Python, including referring to /etc/hosts?

... I'm not really sure if you want to do DNS lookups yourself or if you just want a host's ip. In case you want the latter, import socket print(socket.gethostbyname('localhost')) # result from hosts file print(socket.gethostbyname('googl...