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Make copy of an array

I have an array a which is constantly being updated. Let's say a = [1,2,3,4,5] . I need to make an exact duplicate copy of a and call it b . If a were to change to [6,7,8,9,10] , b should still be [1,2,3,4,5] . What is the best way to do this? I tried a for loop like: ...
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How to resume Fragment from BackStack if exists

I am learning how to use fragments. I have three instances of Fragment that are initialized at the top of the class. I am adding the fragment to an activity like this: ...
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What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?

I tried researching the difference between cout , cerr and clog on the internet but couldn't find a perfect answer. I still am not clear on when to use which. Can anyone explain to me, through simple programs and illustrate a perfect situation on when to use which one? ...
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Why is exception handling bad?

Google's Go language has no exceptions as a design choice, and Linus of Linux fame has called exceptions crap. Why? 15 Answ...
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Thread pooling in C++11

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Why remove unused using directives in C#?

I'm wondering if there are any reasons (apart from tidying up source code) why developers use the "Remove Unused Usings " feature in Visual Studio 2008? ...
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Does a `+` in a URL scheme/host/path represent a space?

I am aware that a + in the query string of a URL represents a space. Is this also the case outside of the query string region? That is to say, does the following URL: ...
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Apache Prefork vs Worker MPM

Looking at the Apache config file, I see Prefork and Worker MPM defined. What is the difference and which one is Apache using? ...
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Adding VirtualHost fails: Access Forbidden Error 403 (XAMPP) (Windows 7)

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What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and

All of these provide binary serialization, RPC frameworks and IDL. I'm interested in key differences between them and characteristics (performance, ease of use, programming languages support). ...