STL for hash tables

[n4nature]

Is there an STL implementation available for hash tables? If so, what is the name of the library?

Thanks.

[Bazzy]

Try with map: http://www.cplusplus.com/reference/stl/map/

[Hammurabi]

He asked for a hash table. Try TR1's unordered_map.

[n4nature]

@Bazzy: I have used maps before, I wanted to know about the hash tables.

@Hammurabi: I tried unordered maps before, and it gives error:

fatal error C1083: Cannot open include file: 'tr1/unordered_map': No such file or directory
Error executing cl.exe.

Can you suggest where can I install it from? and Where to install?

[Hammurabi]

This works in MSVC++:

#include <unordered_map>

int main()
{
    std::tr1::unordered_map<int, int> m;
}

[Bazzy]

That is an extension which should be available with C++0x but is not part of the current standard

[Hammurabi]

It's available now in tr1.

[n4nature]

I have MS Studio 6.0 and it doesn't compile. I wonder what version do you run?

[z05DSL3A]

2008 with the feature pack installed would be my guess. (I think it is also in SP1)

[Bazzy]

VC++ 6 may not even compile ISO C++, The current version should be 9

[n4nature]

I downloaded MS Visual Studio Express Edition 2008 (which is 9.0) and wrote a sample program. The "Build" button is disabled though. Tried to search on the web, with no avail.

Anybody experienced this before? How do I activate it?

[Bazzy]

Have you created a new (empty) project?

[n4nature]

The Build button is active after creating new project (Win32 Console app). However, now when I create new project, there are 2 new files (1 src and 1 header) added to the project by default: stdafx.h and stdafx.cpp. And the project doesn't seem to compile without them. How do I get rid of them?

[Bazzy]

The project you start with should be Empty Project

[n4nature]

Thanks to all, its working now.

[z05DSL3A]

Right click on the project in solution explorer. Select properties. Navigate to Configuration Properties->C/C++->Pre-compiled Headers(in the left hand pane, in the right hand pane change Create/Use Precompiled Headers to Not Using Precompiled Headers. Click OK.

Edit:
oh well, create new Empty Project is quicker than editing the properties. :0)