Question about the std namespace (documentation, not usage)

Hi all,

I've recently moved to programming in C++ and I just had a quick question about the std namespace. I'm okay with the syntax, and I've read up on why namespaces were instituted, I'm just having trouble finding some info online:

Recently, when using the <vector> library, I had to do some fiddling about until I realized I need to preface declarations with std:: as with functions like std::cin and std::cout. I've avoided using the line "using namespace std" as I've read it can lead to confusion in more complicated programming.

Can anyone point me to a resource which has a comprehensive list of which libraries fall under the std namespace?

Quote:

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Originally Posted by Ocifer

Hi all,

I've recently moved to programming in C++ and I just had a quick question about the std namespace. I'm okay with the syntax, and I've read up on why namespaces were instituted, I'm just having trouble finding some info online:

Recently, when using the <vector> library, I had to do some fiddling about until I realized I need to preface declarations with std:: as with functions like std::cin and std::cout. I've avoided using the line "using namespace std" as I've read it can lead to confusion in more complicated programming.

Can anyone point me to a resource which has a comprehensive list of which libraries fall under the std namespace?

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All of them, or at least all of them that are "built-in" C++. If you go somewhere like cplusplus.com, you'll see what's standard and what's not.

Thanks. For anyone who has a similar question, I found what I was looking for at:

Reference - C++ Reference

If it helps clear this up for anyone else, my confusion was that I thought the preface " std:: " was only used for standard iostream functions like cin or cout or cin.get, etc... This is not the case, and rather at the above link there are a number of different commonly-used libraries which fall under the "std" namespace, of which <vector> is one.

Everything in the C++ standard library lies in the std namespace. So when you include a standard header (eg, vector, map, algorithm), all functions and classes will be in std!