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by: Jon Cosby |
last post by:
I need help in hashmaps. Why doesn't this work:
#include <hash_map>
hash_map <int, string> hm1;
typedef pair <int, string> pr;
hm1.insert(str_pair(1, "Hello"));
It compiles, but crashes at runtime, pointing to something in xhash.
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by: Mark |
last post by:
Hi,
I'm trying to use hash_map (gcc 3.2.2) with a std::string as the key. It
will compile if I use <map> but I get a bunch of template compile errors
when I change it to hash_map. Any suggestions? My program and the errors
are below...
#include <ext/hash_map>
#include <string>
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by: peter_k |
last post by:
Hi
I've defined hash_map in my code using this:
-------------------------------------------
#include <string>
#include <hash_map.h>
&
namespace __gnu_cxx {
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by: kony |
last post by:
Hi there,
I would much appreciate your help with the following problem.
Below is the code that uses a hash_map. I want to release all the memory occupied by the hash_map for other use. Apparently clear() function is not working and the trick with swap() is half working. Does anybody know how to deallocate the hash_map? Thanks in advance.
Kon
#include <functional>
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by: jayesah |
last post by:
Hi All,
I am developing my code with Apache stdcxx. I am bound to use STL of
Apache only.
Now today I need hash_map in code but as I learned, it is not
available in Apache since it is not standard c++. Though it is
available with GNU STL.
The code module where I use hash_map will generate separate object
file during compilation. This code module is also using STL string.
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by: Amit Bhatia |
last post by:
Hi,
I am trying to use hash maps from STL on gcc 3.3 as follows:
#ifndef NODE_H
#define NODE_H
#include <ext/hash_map>
#include "node_hasher.h"
class Node;
typedef hash_map<pair<int,int>, Node, Node_HasherLoc_Tree;
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by: James Kanze |
last post by:
On Jul 16, 10:53 pm, Mirco Wahab <wa...@chemie.uni-halle.dewrote:
It depends. You might like to have a look at my "Hashing.hh"
header (in the code at kanze.james.neuf.fr/code-en.html---the
Hashing component is in the Basic section). Or for a discussion
and some benchmarks,
http://kanze.james.neuf.fr/code/Docs/html/Hashcode.html. (That
article is a little out of date now, as I've tried quite a few
more hashing algorithms. But the...
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by: frankw |
last post by:
Hi,
I have a hash_map with string as key and an object pointer as value.
the object is like
class{
public:
float a;
float b;
...
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by: Jon |
last post by:
Normally I can search and find answers to things like this but with this
one I'm not even sure what to search for and haven't had any luck. Anyway,
I'm trying to use a template name as a template parameter and can't seem
to figure out what I need to do. Code follows:
template <class MAPTYPE, class KEYTYPE, class VALUETYPEclass double_map
{
MAPTYPE<KEYTYPE,VALUETYPEforward_; // for "forward" lookups
MAPTYPE<VALUETYPE,KEYTYPEreverse_; //...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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