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Groups > comp.lang.c++ > #3677

Simple structure and copying data to pointer of the same structure

From "A" <a@a.a>
Newsgroups comp.lang.c++
Subject Simple structure and copying data to pointer of the same structure
Date 2011-04-14 17:25 +0200
Organization B.net Hrvatska d.o.o.
Message-ID <io73lj$7tl$1@gregory.bnet.hr> (permalink)

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let's say I have:

struct TWhatever
    {
    int MyInt;
    bool MyBool;
    }

Now I have already preallocated memory to where pWhatever points so:

TWhatever* pWhatever;

// Memory is already preallocated so the below lines work properly
pWhatever->MyInt = 1;
pWhatever->MyBool = false;

And now I also have vector:

std::vector<TWhatever> MyVect;
MyVect.pushBack(TWhatever());
MyVect[0].MyInt = 1;
MyVect[0].MyBool = false;


And now the question finally - all I want is to copy data from vector to 
memory that pWhatever points to.

So I tried:
pWhatever = &MyVect[0]; // doesn't seem to work

But this worked:
pWhatever->MyInt = MyVect[0].MyInt; // works
pWhatever->MyBool = MyVect[0].MyBool; // also works

The question - can I do it somehow simpler than the last example? The 
problem is not in last 2 lines but there are 30 or so lines for each 
initialization so something simpler would be much more readable in code.

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Thread

Simple structure and copying data to pointer of the same structure "A" <a@a.a> - 2011-04-14 17:25 +0200
  Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-14 11:38 -0400
    Re: Simple structure and copying data to pointer of the same structure "A" <a@a.a> - 2011-04-14 17:44 +0200
      Re: Simple structure and copying data to pointer of the same structure "A" <a@a.a> - 2011-04-14 17:55 +0200
        Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-14 11:57 -0400
        Re: Simple structure and copying data to pointer of the same structure "A" <a@a.a> - 2011-04-14 17:59 +0200
          Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-14 12:06 -0400
          Re: Simple structure and copying data to pointer of the same structure "Thomas J. Gritzan" <phygon_antispam@gmx.de> - 2011-04-14 18:09 +0200
          Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-14 18:15 +0200
            Re: Simple structure and copying data to pointer of the same structure Martijn van Buul <pino@dohd.org> - 2011-04-14 16:30 +0000
              Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-14 18:39 +0200
                Re: Simple structure and copying data to pointer of the same structure Martijn van Buul <pino@dohd.org> - 2011-04-14 17:01 +0000
                Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-14 19:12 +0200
                Re: Simple structure and copying data to pointer of the same structure gwowen <gwowen@gmail.com> - 2011-04-14 14:32 -0700
                Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-14 23:48 +0200
                Re: Simple structure and copying data to pointer of the same structure gwowen <gwowen@gmail.com> - 2011-04-15 04:23 -0700
                Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-15 09:32 -0400
                Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-15 09:38 -0400
                Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-15 18:48 +0200
                Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-15 13:21 -0400
                Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-15 19:31 +0200
                Re: Simple structure and copying data to pointer of the same structure gwowen <gwowen@gmail.com> - 2011-04-15 11:45 -0700
                Re: Simple structure and copying data to pointer of the same structure Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-04-16 23:07 +0000
                Re: Simple structure and copying data to pointer of the same structure Martijn van Buul <pino@dohd.org> - 2011-04-15 20:08 +0000
                Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-15 22:34 +0200
      Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-14 11:56 -0400
        Re: Simple structure and copying data to pointer of the same structure "A" <a@a.a> - 2011-04-14 18:02 +0200
          Re: Simple structure and copying data to pointer of the same structure cg_chas <cg_chas@hotmail.com> - 2011-04-14 12:15 -0400
      Re: Simple structure and copying data to pointer of the same structure "Thomas J. Gritzan" <phygon_antispam@gmx.de> - 2011-04-14 18:04 +0200
        Re: Simple structure and copying data to pointer of the same structure "A" <a@a.a> - 2011-04-14 18:15 +0200
          Re: Simple structure and copying data to pointer of the same structure "Thomas J. Gritzan" <phygon_antispam@gmx.de> - 2011-04-14 18:21 +0200
      Re: Simple structure and copying data to pointer of the same structure "Paul" <pchristor@yahoo.co.uk> - 2011-04-14 17:21 +0100
  Re: Simple structure and copying data to pointer of the same structure "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-14 18:10 +0200
  Re: Simple structure and copying data to pointer of the same structure Noah Roberts <dont@email.me> - 2011-04-14 09:31 -0700
    Re: Simple structure and copying data to pointer of the same structure "A" <a@a.a> - 2011-04-14 21:06 +0200
  Re: Simple structure and copying data to pointer of the same structure Goran <goran.pusic@gmail.com> - 2011-04-15 00:05 -0700

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