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C++: scope, different files etc..
Post 20330 by J.P on Wednesday 24th of April 2002 03:37:40 PM
04-24-2002
C++: scope, different files etc..
I'm having a problem getting this to work..
I got 3 files,
start.C - Where i got my main() function
Menu.C & Menu.h - Where I'm trying to use hash_map
start.C
#include <iostream>
#include "Menu.h"
using namespace std;
int main() { /* test code here */ return 0; }
Menu.h
#ifndef _MENU_H_
#define _MENU_H_
class Menu {
public:
Menu() { }
~Menu() { }
private:
hash_map< const char*, int, hash<const char*>, eqstr > hashmap;
};
#endif
Menu.C
#include <iostream>
#include <string>
#include <hash_map>
struct eqstr {
bool operator()(int s1, int s2) {
return s1 == s2;
}
};
#include "Menu.h"
-----------------------------
The code doesn't actually do anything now but I just want to get this working before i continue my little project. I've tried using hash_map in a separate file and it worked.
Compiler errors for the code above:
[jp@Slacktop:~/devel/cpp/001/] g++ start.C Menu.C
In file included from start.C:2:
Menu.h:10: `hash' was not declared in this scope
Menu.h:10: parse error before `char'
Menu.h: In method `Menu::Menu()':
Menu.h:6: parse error before character 0240
Menu.h: In method `Menu::~Menu()':
Menu.h:7: parse error before character 0240
In file included from Menu.C:11:
Menu.h: In method `Menu::Menu()':
Menu.h:6: parse error before character 0240
Menu.h: In method `Menu::~Menu()':
Menu.h:7: parse error before character 0240
The second line "'hash' was not declared in this scope" is probably the root of this evil error but I'm clueless on how to fix this..
any suggestions?
guidelines and recommendations on how to use multiple files are also appreciated.
Slackware 8.0, Linux 2.4.5, G++ 2.95.3
I got 3 files,
start.C - Where i got my main() function
Menu.C & Menu.h - Where I'm trying to use hash_map
start.C
#include <iostream>
#include "Menu.h"
using namespace std;
int main() { /* test code here */ return 0; }
Menu.h
#ifndef _MENU_H_
#define _MENU_H_
class Menu {
public:
Menu() { }
~Menu() { }
private:
hash_map< const char*, int, hash<const char*>, eqstr > hashmap;
};
#endif
Menu.C
#include <iostream>
#include <string>
#include <hash_map>
struct eqstr {
bool operator()(int s1, int s2) {
return s1 == s2;
}
};
#include "Menu.h"
-----------------------------
The code doesn't actually do anything now but I just want to get this working before i continue my little project. I've tried using hash_map in a separate file and it worked.
Compiler errors for the code above:
[jp@Slacktop:~/devel/cpp/001/] g++ start.C Menu.C
In file included from start.C:2:
Menu.h:10: `hash' was not declared in this scope
Menu.h:10: parse error before `char'
Menu.h: In method `Menu::Menu()':
Menu.h:6: parse error before character 0240
Menu.h: In method `Menu::~Menu()':
Menu.h:7: parse error before character 0240
In file included from Menu.C:11:
Menu.h: In method `Menu::Menu()':
Menu.h:6: parse error before character 0240
Menu.h: In method `Menu::~Menu()':
Menu.h:7: parse error before character 0240
The second line "'hash' was not declared in this scope" is probably the root of this evil error but I'm clueless on how to fix this..
any suggestions?
guidelines and recommendations on how to use multiple files are also appreciated.
Slackware 8.0, Linux 2.4.5, G++ 2.95.3
Last edited by J.P; 04-24-2002 at 04:45 PM..
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LEARN ABOUT DEBIAN
prophet::web::menu
Prophet::Web::Menu(3pm) User Contributed Perl Documentation Prophet::Web::Menu(3pm) NAME
Prophet:Web::Menu - Handle the API for menu navigation METHODS
new PARAMHASH Creates a new Prophet::Web::Menu object. Possible keys in the PARAMHASH are "label", "parent", "sort_order", "url", and "active". See the subroutines with the respective name below for each option's use. label [STRING] Sets or returns the string that the menu item will be displayed as. parent [MENU] Gets or sets the parent Prophet::Web::Menu of this item; this defaults to null. This ensures that the reference is weakened. sort_order [NUMBER] Gets or sets the sort order of the item, as it will be displayed under the parent. This defaults to adding onto the end. link Gets or set a Jifty::Web::Link object that represents this menu item. If you're looking to do complex ajaxy things with menus, this is likely the option you want. target [STRING] Get or set the frame or pseudo-target for this link. something like _blank class [STRING] Gets or sets the CSS class the link should have in addition to the default classes. This is only used if "link" isn't specified. url Gets or sets the URL that the menu's link goes to. If the link provided is not absolute (does not start with a "/"), then is is treated as relative to it's parent's url, and made absolute. active [BOOLEAN] Gets or sets if the menu item is marked as active. Setting this cascades to all of the parents of the menu item. child KEY [, PARAMHASH] If only a KEY is provided, returns the child with that KEY. Otherwise, creates or overwrites the child with that key, passing the PARAMHASH to "new" in Jifty::Web::Menu. Additionally, the paramhash's "label" defaults to the KEY, and the "sort_order" defaults to the pre-existing child's sort order (if a "KEY" is being over- written) or the end of the list, if it is a new "KEY". active_child Returns the first active child node, or "undef" is there is none. delete KEY Removes the child with the provided KEY. children Returns the children of this menu item in sorted order; as an array in array context, or as an array reference in scalar context. render_as_menubar [PARAMHASH] Render menubar with YUI menu, suitable for an application's menu. It can support arbitary levels of submenu. as_link Return this menu item as a "Jifty::Web::Link", either the one we were initialized with or a new one made from the "/label" and "/url" If there's no "/url" and no "/link", renders just the label. perl v5.10.1 2009-12-22 Prophet::Web::Menu(3pm)