July 2003 - openSUSE Programming - openSUSE Mailing Lists

typedef, template, and pointer to vector
by Verdi March 18 Jul '03

18 Jul '03

Hi, Why this code won't compile? #include <iostream> #include <vector> using namespace::std; template<typename T> class Entry { public: T data; }; int main() { typedef Entry<int> ei; vector<ei*>* v = new vector<ei*>(); ei* ONE = new ei(); ONE->data = 1; v->push_back(ONE); ei* tmp = v[0]; //Error here... cout << tmp->data << endl; return 0; } When I compiled the above code: test2.cpp:20: error: cannot convert `std::vector<main()::ei*, std::allocator<main()::ei*> >' to `main()::ei*' in initialization However, if I change v to nonpointer (i.e. vector<ei*> v), that code will compile. Any ideas? TIA. -- -- Verdi March --

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JDBC Driver Classname of MySQLConnector/J 3.0 for Star Office
by Prabu Subroto 18 Jul '03

18 Jul '03

Dear my friends...I need a connection to my MySQL DB Server whichlocated on local machine (127.0.0.1) from my StarOffice. But I don't know how to define the "JDBCDriver Class".The JDBC driver is located on :"c:/myjdbc/mysql-connector-java3.0.8-stable-bin".Please help me how to define it.Thank you very much. --------------------------------- Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month!

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Re: [SLE] C++ Books?
by Jerry Feldman 16 Jul '03

16 Jul '03

On Tue, 15 Jul 2003 14:09:43 -0500 Darrell Cormier <linuxdev(a)sptc.net> wrote: > I know this has been addressed on this list before, but please forgive > > me for asking again. I could not find the posts. > > What is a excellent book on C++? I have programmed (minimally) in C++ > > years ago, and am about to dive in again and want the best > reference/tutorial I can find. I am looking at: > *"C++ Programming Language Special Edition " by *Bjarne Stroustrup > which sounds like a real good one, but I would like to hear others > experiences and opinions. A couple more: The C++ Primer by Stanley B. Lippman is an excellent reference, but it is a couple of years old. I find that it is as relevant today as it was when I bought it (Note that I still use my original K&R I've had since 1978). Practical C++ Programming by Steve Oualline is also a decent book. This is quite readable. Steve lets his programming opinions be known. In the past, when equipped with Stroustrup and Lippman I've had no problems accomplishing what I want to do. Another book, Thinking in C++ by Bruce Eckel is supposed to be pretty good. It is also available online (http://www.mindview.net/Books/TICPP/ThinkingInCPP2e.html) There are a lot of bad books out there too. (My experience with a friend's C for Dummies was that I told her to burn the book because I didn't want someone rumaging thrugh the trash to use it). The bottom line is that a book on a computer language should not teach bad habits (eg like "void main()"). Both Oualline and Lippman have good solid code examples that are available online. -- Jerry Feldman <gaf(a)blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9

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first time to use MySQL on MS Platform
by Prabu Subroto 16 Jul '03

16 Jul '03

Dear my friends... I am trying to develop a database application with PHP Version 4.3.2, MS Window 2000, MySQL 4.0.13-nt and Apache 2. I tried to insert a record onto my MySQL but I got this error messages. What do I have to defined to overcome this problem? " Notice: Undefined variable: productid in C:\Programme\Apache Group\Apache2\htdocs\amt\cgi\productsave.php on line 15 Notice: Undefined variable: itemname in C:\Programme\Apache Group\Apache2\htdocs\amt\cgi\productsave.php on line 15 Notice: Undefined variable: description in C:\Programme\Apache Group\Apache2\htdocs\amt\cgi\productsave.php on line 15 Notice: Undefined variable: price in C:\Programme\Apache Group\Apache2\htdocs\amt\cgi\productsave.php on line 15 Notice: Undefined variable: information in C:\Programme\Apache Group\Apache2\htdocs\amt\cgi\productsave.php on line 16 Saved successfully " Here is the code of productsave.php : " <?php include("functions.php"); $sql=" insert into product ( productid, itemname, description, price, information ) values ('$productid', '$itemname', '$description', '$price', '$information') "; $conn=connection(); choosedb(); if (mysql_query($sql,$conn)){ echo "Saved successfully<br>"; } else echo mysql_error(); mysql_close($conn); ?> " Here is the code of the form which calls productsave.php (it's cgi program): " <form action="cgi/productsave.php" method="POST"> <center><b><u>Data Entry - Product List</u></b></center> <br> <table align="center" border="0"> <tr><td align="left">1.</td><td align="left">Product ID</td><td align="left" >:</td> <td align="left" ><input type="text" name="productid" readonly="yes"></td></tr> <tr><td align="left">2.</td><td align="left">Item Name</td><td align="left">:</td> <td align="left"><input type="text" name="itemname"></td></tr> <tr><td align="left">3.</td><td align="left">Description</td><td align="left">:</td> <td align="left"><input type="text" name="description"></td></tr> <tr><td align="left" >4.</td><td align="left">Price</td><td align="left">:</td> <td align="left"><input type="text" name="price"></td></tr> <tr><td align="left">5.</td><td align="left">Information</td><td align="left">:</td> <td align="left"><input type="text" name="information"></td></tr> <tr><td colspan="4" align="center"><input type="submit" value="Save" src="img/ok.png"> <input type="reset" value="Clear" src="img/no.png"></td></tr> </table> </form> " Please tell me. Thank you very much in advance. --------------------------------- Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month!

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Re: [SLE] C++ Books?
by alan＠ibgames.com 15 Jul '03

15 Jul '03

On 15 Jul 2003 at 21:30, Gabriel Dos Reis wrote: To: suse-programming-e <suse-programming-e(a)suse.com> Copies to: susE-Linux <suse-linux-e(a)suse.com> From: Gabriel Dos Reis <gdr(a)integrable-solutions.net> Organization: Integrable Solutions Date sent: 15 Jul 2003 21:30:24 +0200 Subject: Re: [SLE] C++ Books? > Darrell Cormier <linuxdev(a)sptc.net> writes: > > | I know this has been addressed on this list before, but please forgive > | me for asking again. I could not find the posts. | | What is a > excellent book on C++? I have programmed (minimally) in C++ | years > ago, and am about to dive in again and want the best | > reference/tutorial I can find. I am looking at: | *"C++ Programming > Language Special Edition " by *Bjarne Stroustrup | which sounds like a > real good one, but I would like to hear others | experiences and > opinions. > > Bjarne's book is sort-of the reference on C++ -- it is good to have. If > you're starting, then you might want to get the one by Koenig and Moo: > Accelerated C++. My recommandatation for beginners in C++. > > -- Gaby Yeah I second that - we use Koenig & Moo on the ACCU mentored development beginners program (see http://www.accu.org/ , which also has reviews on a -lot- of programming book, not just C++). Gaby - I didn't realise you were on this list :) alan -- http://www.ibgames.net/alan Registered Linux user #6822 http://counter.li.org Winding Down - Weekly Tech Newsletter - subscribe at http://www.ibgames.net/alan/winding/mailing.html

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Re: [SLE] C++ Books?
by Roberto Dohnert 15 Jul '03

15 Jul '03

C++ for Dummies, an excellent resource and very simple to understand On Tue, 2003-07-15 at 15:09, Darrell Cormier wrote: > I know this has been addressed on this list before, but please forgive > me for asking again. I could not find the posts. > > What is a excellent book on C++? I have programmed (minimally) in C++ > years ago, and am about to dive in again and want the best > reference/tutorial I can find. I am looking at: > *"C++ Programming Language Special Edition " by *Bjarne Stroustrup which > sounds like a real good one, but I would like to hear others experiences > and opinions. > > Thanks, > Darrell Cormier -- Roberto Dohnert <webwarrior(a)gnu-darwin.org>

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Re: FW: [SLE] C++ Books? [Repost]
by Darrell Cormier 15 Jul '03

15 Jul '03

Rob Sell wrote: >Batting 1000% today replied to wrong list. >------------------------------------------ > <snip> Sorry Rob, that was actually my fault. I sent to suse-linux-e and set the reply-to to suse-programming-e. I meant to make them both suse-programming-e. Thanks for your input, D.C. >I own that book and the "Special Edition" is the inclusion of appendices on >using the STL. All in all it is a very good book. At this point in time I'm >not sure I can recommend it though, as of gcc 3.0 and above there are a lot >of changes in the C++ standard and I don't know if that book covers those >differences. > >Rob > >-----Original Message----- >From: Darrell Cormier [mailto:linuxdev@sptc.net] >Sent: Tuesday, July 15, 2003 2:10 PM >To: susE-Linux >Subject: [SLE] C++ Books? > >I know this has been addressed on this list before, but please forgive >me for asking again. I could not find the posts. > >What is a excellent book on C++? I have programmed (minimally) in C++ >years ago, and am about to dive in again and want the best >reference/tutorial I can find. I am looking at: >*"C++ Programming Language Special Edition " by *Bjarne Stroustrup which >sounds like a real good one, but I would like to hear others experiences >and opinions. > >Thanks, >Darrell Cormier > > > >

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RE: [SLE] C++ Books?
by Rob Sell 15 Jul '03

15 Jul '03

I own that book and the "Special Edition" is the inclusion of appendices on using the STL. All in all it is a very good book. At this point in time I'm not sure I can recommend it though, as of gcc 3.0 and above there are a lot of changes in the C++ standard and I don't know if that book covers those differences. Rob -----Original Message----- From: Darrell Cormier [mailto:linuxdev@sptc.net] Sent: Tuesday, July 15, 2003 2:10 PM To: susE-Linux Subject: [SLE] C++ Books? I know this has been addressed on this list before, but please forgive me for asking again. I could not find the posts. What is a excellent book on C++? I have programmed (minimally) in C++ years ago, and am about to dive in again and want the best reference/tutorial I can find. I am looking at: *"C++ Programming Language Special Edition " by *Bjarne Stroustrup which sounds like a real good one, but I would like to hear others experiences and opinions. Thanks, Darrell Cormier -- Check the headers for your unsubscription address For additional commands send e-mail to suse-linux-e-help(a)suse.com Also check the archives at http://lists.suse.com Please read the FAQs: suse-linux-e-faq(a)suse.com

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OpeGL headers and libraries
by expatriate 15 Jul '03

15 Jul '03

Hello I'm trying to compile for the first time an OpenGL application. I think I have all of the libraries but I seem not to have some headers (glut.h for example). I searched through every installation CDROM and rpm'd every file containing the name "mesa" and "glx" or whatever sounded OpenGL-like. Can anyone point me to what I'm missing? TIA & Cheers

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const int function parameter
by John Lamb 12 Jul '03

12 Jul '03

Here's a question for anyone who knows about C/C++ technicalities. I recently noticed that gcc/g++ allows the following for ints or any other builtin type. type_name function( int ); type_name function( const int x ){ ... } i.e. the declaration and definition parameter types are nominally different. Is this correct in ISO C++? I couldn't find any mention of this in Stroustrup. It seems eminently sensible to me that this should be allowed. I often want the compiler to check that x is const within function but don't need to declare a variable const if it's passed by value. OTOH C++ allows overloading - type_name function( const int& x ){ ... } type_name function( int& x ){ ... } can be defined differently. -- JDL Non enim propter gloriam, diuicias aut honores pugnamus set propter libertatem solummodo quam Nemo bonus nisi simul cum vita amittit.

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