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Questions tagged [std]

The C++ Standard Library, and its namespace. Use in conjunction with [c++].

From Wikipedia

The C++ Standard Library provides several generic containers, functions to utilise and manipulate these containers, function objects, generic strings and streams (including interactive and file I/O).

http://en.wikipedia.org/wiki/C++_Standard_Library

The concept of using namespaces

http://en.wikipedia.org/wiki/Namespace_(computer_science)

Also see

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O(1) std or boost list concatenate

Is there a data structure, such as std::list, that allows O(1) concatenation of one list to the end of another? I.e. the final item in list A is linked to the first item of list B?
Chris Redford
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expected unqualified-id before token... 'std::'

When i compile C++ code in an Android NDK project i get: expected unqualified-id before '(' token FPEnvironment_DUMMY.h /PocoFoundation/jni/include/Poco line 98 C/C++ Problem The error origins from the lines: inline bool…
David Karlsson
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why and how does rand() exist both in global and std namespace in cstdlib?

I understand that rand(), as an example function from , exists both in the global and the std namespace. In effect the following will compile without errors, i.e. both calls to std::rand() and rand() will be legit. #include …
gevang
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Visual Studio: Global namespace takes precedence over local

I got some code sent to me today, and it's using the std::transform on a std::string to make it all lowercase. The sender had written and compiled the code in Visual Studio 2010: using namespace std; string test = "TEST"; transform(test.begin(),…
hugolm84
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stoi and std::to_string on mingw 4.7.1

Well I wanted to port my C++11 programm to windows, but it seems in mingw 4.7.1 there is no stoi and std::to_string implemented. I know it has been asked and there was a solution to edit some header, but in my mingw version (4.7.1 shipped with…
user1873947
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Does the value of std::endl depend on the OS?

Possible Duplicate: what does std::endl represent exactly on each platform? I'm trying to figure out if std::endl returns \r\n, \n, or \r depending on the platform, or if it sticks with one all the time.
Lakey
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llinking @_Znam and @_Znwm

I'm new to c++ programming and currently working on an llvm front-end development project. When I link the object files created by llc, my linker cannot locate the following functions. I know that these are standard c++ library functions but using…
user1723583
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is this boost::tuple code convertible to pure std:: standard library code?

Is the following boost code convertible to pure c++11 standard libraries? I see std::tuple and std::for_each but I can't seem to get them to play with each other. I am currently using gcc 4.7.2. CODE #include #include #include…
kfmfe04
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has ::std::has_nothrow_default_constructor been moved/changed?

In trying to build boost mirror with gcc 4.7.2, I ran into this error, but oddly enough, I see this documentation. Has ::std::has_nothrow_default_constructor been moved/changed? In file included from…
kfmfe04
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Accept only letters

This should accept only letters, but it is not yet correct: #include #include #include using namespace std; int main() { std::string line; double d; while (std::getline(std::cin, line)) { …
sg552
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CDT Indexer cannot find std::unordered_map

My Eclipse CDT indexer apparently cannot find std::unordered_map, although the compiler does. It shows the following "errors": The "Includes" folder of my project looks like this: How can I tell the indexer how to find std::unordered_map?
clstaudt
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How to read from std vector front and remove read variable?

How to read from std vector front and remove read variable? Is it: v.front(); v.erase(v.begin());
myWallJSON
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using std::set find with struct data

typedef struct Edge { int v1, v2, w; bool operator <(const Edge &rhs) const{ bool b = v1 < rhs.v1 || v2 < rhs.v2; return (b); } } edge; template struct my_less { bool operator()(const T& _Left, const T&…
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What is the use of std::nothrow and std::new_handler in standard header file

I came across a small standard header file . I have probably not seen its direct use before. Here is the g++ version for those who are interested. Below part is of my interest: struct nothrow_t { }; extern const nothrow_t nothrow; /** If…
iammilind
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Convert hex std::string to unsigned char

I have a hex string and want to convert this to a hex unsigned char array! std::string hex = "0c45a1bf" unsigned char hexCh = "" [0] = "0c" [1] = "45" [2] = "a1" [3] = "bf" I want this bevavior shown in hexCh! Best way over…
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