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What is the difference between concurrent programming and parallel programming?

What is the difference between concurrent programming and parallel programing? I asked google but didn't find anything that helped me to understand that difference. Could you give me an example for both? ...
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How to check if all elements of a list matches a condition?

...ne this with a generator expression to produce the result you want cleanly and efficiently. For example: >>> items = [[1, 2, 0], [1, 2, 0], [1, 2, 0]] >>> all(flag == 0 for (_, _, flag) in items) True >>> items = [[1, 2, 0], [1, 2, 1], [1, 2, 0]] >>> all(flag == ...
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/

...ws note The Ruby Installer builds for windows are prepared by Luis Lavena and the path to certificates will be showing something like C:/Users/Luis/... check https://github.com/oneclick/rubyinstaller/issues/249 for more details and this answer https://stackoverflow.com/a/27298259/497756 for fix. ...
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How to Avoid Response.End() “Thread was being aborted” Exception during the Excel file download

I tried to convert my dataset into excel and download that excel .I got my required excel file.But System.Threading.ThreadAbortException was raised every excel download. How to resolve this issue ?.. Please help me... ...
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Copying a HashMap in Java

... Maybe i'm not understanding this but I don't need a copy of the map. I need a copy of the class that holds the map. ? There for myObjectListB has to be a class derived from MyojbectsList not a hashmap. – user691305 ...
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Ways to eliminate switch in code [closed]

... -1: I've never used a switch statement with typeof, and this answer doesn't suggest ways or reasons to work around switch statements in other situations. – Kevin Jun 18 '13 at 21:00 ...
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Why is this inline-block element pushed downward?

Following is my code and I want to understand that why #firstDiv is being pushed downward by all browsers. I really want to understand the inner workings of the fact that why its being pushed downward rather than pulling it upward by one way or another. (and I know how to align their tops :)) ...
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What is a memory fence?

...are concept. In higher level languages we are used to dealing with mutexes and semaphores - these may well be implemented using memory fences at the low level and explicit use of memory barriers are not necessary. Use of memory barriers requires a careful study of the hardware architecture and more ...
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Class does not implement its superclass's required members

So I updated to Xcode 6 beta 5 today and noticed I received errors in nearly all of my subclasses of Apple's classes. 4 Ans...
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Concat scripts in order with Gulp

Say, for example, you are building a project on Backbone or whatever and you need to load scripts in a certain order, e.g. underscore.js needs to be loaded before backbone.js . ...