vectors

[nabeels786]

can i make a vector of vectors?

i have text file with blocks

SAY
<text>
RES
<text>
END

I wanna hold as many of these blockes in different vectors...its for a scripting thingy.

like one vector for SAY, but the number of vectors varies on the number of blocks..

or is there a better way to do this?

[Zaei]

You CAN make a vector of vectors, but be careful. When you use a template class as a parameter for another template class, you can run into a little problem that gets nearly EVERYONE. Consider:

vector<vector<int>> vec;

See the error?

vector<vector<int>> vec;

The compiler will think that you are typing a bit shift operator, instead of templating. To avoid this, simply add a space:

vector<vector<int> > vec;

No more error.

Z.

[nabeels786]

oh ok, i see

so how would i use it then?
sorry im new to this

so i can have a variable number of blocks that are seperate. could a linked list also be used? but i guess id have to have a vector of those

not strin vectors, im using

vector<char*> say;

im trying to use string but it complains more and more...heh

[Zaei]

Originally posted by nabeels786
im trying to use string but it complains more and more...heh

Complains like a mother, doesn't it? =). I had to write my own vector class to use the STL string with a vector.

Z.

[nabeels786]

oh ok, well ill stick with char* then.

heres where the problem is:

if(!strcmp(tmpline,"SAY")){
			//get everything from SAY to RES
			while(strcmp(tmpline,"RES") && !feof(script)){
				fgets(tmpline,255,script);
				tmpline=trimnl(tmpline);
				

				if(strcmp(tmpline,"RES")){
					if(debug)
						debugp(tmpline);
					say.push_back(tmpline);
				}
			}
			//get everything from RES to END
			while(strcmp(tmpline,"END") && !feof(script)){
				fgets(tmpline,255,script);
				tmpline=trimnl(tmpline);
				
				if(strcmp(tmpline,"END")){
					if(debug)
						debugp(tmpline);

					resp.push_back(tmpline);
				}
			}

on the push backs
it doesnt actually give an error, but i think you know what i mean

i can use string, but then i get other errors which i cant fix cuz i dunno how

the debugp shows the tmpline fine, so its reading it in correctly fromthe file, but when i list the contents of the vector, its all scrwed up

vector< char * > say;
vector< char * > resp;

are the declarations

thx

[CornedBee]

There is another problem: the nesting level is fixed:
2 levels:
vector <vector <type> >
3 levels:
vector <vector <vector <type> > >

but it's not variable at run-time.

[parksie]

Originally posted by Zaei
Complains like a mother, doesn't it? =). I had to write my own vector class to use the STL string with a vector.

Z.

What error was that? I've never had any problems with string and vector

[Zaei]

"<some freakishly long mangled function/object name" has been truncated to 255 characters in the debug information.

Unfortunatly, "freakishly long" usually means ~5 lines in the output window, and there are usually about 5 of the things all together. Makes it a PAIN to find the REAL problems, and it also seems that #pragma warning(disable :<#>) doesnt really help.

Z.

[Zaei]

Here, this is my build output (punishment?) for trying to declare a vector<string>:

--------------------Configuration: EXEExport - Win32 Debug--------------------
Compiling...
main.cpp
c:\c++\exeexport\main.cpp(10) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_
traits<char>,std::allocator<char> > const &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,int>' : identifier was truncated to '255' characters in the debug information
c:\c++\exeexport\main.cpp(10) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_traits
<char>,std::allocator<char> > &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,int>' : identifier was truncated to '255' characters in the debug information
c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >
>::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information
c:\program files\microsoft visual studio\vc98\include\vector(60) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >
>::~vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information

main.obj - 0 error(s), 4 warning(s)

Z.

[nabeels786]

i got mine to work

i guess u do have

#include<vector>
#include<string.h>

using namespace std;

?

[Zaei]

Nope, #include <string>.

Z.

[parksie]

Originally posted by Zaei
Here, this is my build output (punishment?) for trying to declare a vector<string>:


Z.

That's a warning, not an error. It means that it couldn't fit the generated symbol into the debug information. I'm sure you can disable it, I do it regularly. Unfortunately my code is archived right now until I get my PC back up and running and get off this damn keyboard. Has taken me about 5 minutes to type this!

[Zaei]

I know its a warning... Thus "it COMPLAINS like..." =). In the end though, when Im working on something with a bit of substance, that output might look like "main.obj - 3 error(s), 44 warning(s)"... And its just a BIT difficult to find those 3 errors in some 200 lines of warning =(.

Z.

[Zaei]

And you might type faster using the character map =P.

Or maybe the Onscreen Keyboard =P.

Z.

[parksie]

I was just wondering as to why you needed to write your own vector class

[CornedBee]

#pragma warning(disable: whatever)

worked for me with exactly this error...

Look into the compiler/linker options, maybe you can globally disable that error.

[Zaei]

Originally posted by parksie
I was just wondering as to why you needed to write your own vector class

It was already written (one of those things to see if I could =).

CornedBee, ill take a look =). It will certainly be nice to not have to remember what vector I am using =).

Z.

[CornedBee]

I just received a load of books from amazon, one of those recommended to add exactly this line at the top of every file where you use vector<string>. Interestingly it's a game programming book...


If you use AppWizard and it creates a stdafx.h file, put it in there to force the warning off in all files. It's totally useless anyway.

Valid VC++ syntax.
Jippieh.
No compiler errors
#include "stdafx.h"
This is an error.

[nabeels786]

yeah i have the stdafx.h

i thought you mean to put "Jippieh."

[CornedBee]

Don't look at that code snippet, it's totally unrelated to the thread.

I just remembered the interesting fact that the VC++ compiler ignores everything up to the
#include "stdafx.h"
so I can write what I want there...

[Zaei]

Yeah, that was pretty annoying until I figured it out =).

Z.