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When should I choose Vector in Scala?

It seems that Vector was late to the Scala collections party, and all the influential blog posts had already left. 6 Answ...
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How should one use std::optional?

I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
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Gson: Directly convert String to JsonObject (no POJO)

Can't seem to figure this out. I'm attempting JSON tree manipulation in GSON, but I have a case where I do not know or have a POJO to convert a string into, prior to converting to JsonObject . Is there a way to go directly from a String to JsonObject ? ...
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Compiling C++11 with g++

I'm trying to update my C++ compiler to C++11. I have searched a bit and I have come to the conclusion that I have to use the flag -std=c++0x or -std=gnu++0x , but I don't know many things about flags. Can anyone help me? (I'm using Ubuntu 12.04.) ...
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Can C++ code be valid in both C++03 and C++11 but do different things?

Is it possible for C++ code to conform to both the C++03 standard and the C++11 standard, but do different things depending on under which standard it is being compiled? ...
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Printing leading 0's in C?

I'm trying to find a good way to print leading 0's, such as 01001 for a zipcode. While the number would be stored as 1001, what is a good way to do it? ...
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Casting a variable using a Type variable

In C# can I cast a variable of type object to a variable of type T where T is defined in a Type variable? 12 Answers ...
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Java, Simplified check if int array contains int

Basically my mate has been saying that I could make my code shorter by using a different way of checking if an int array contains an int, although he won't tell me what it is :P. ...
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Why the switch statement cannot be applied on strings?

Compiling the following code and got the error of type illegal . 20 Answers 20 ...
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How to extract request http headers from a request using NodeJS connect

I'd like to get the "Host" header of a request made using Node JS's connect library bundle. My code looks like: 4 Answers ...