Обсуждение: Re[2]: [INTERFACES] Perl Interface

Afternoon,        intriguing... however, how do I go to the next row? I tried a     variation earlier that looked
like:       while (@row = $result->fetchrow) {          $string = join("\|",@row);    }    $result = $conn->getResult;
         I've also tried :        while ($result = $conn->getResult) {          while (@row = $result->fetchrow) {
          $string = join("\|",@row);          }          push(@set,$string);    }            The goal is to get
multiplerows into a single array. The answer is     probally very simple.             Thx,    -Rob    
 


______________________________ Reply Separator _________________________________
Subject: Re: [INTERFACES] Perl Interface 
Author:  James Olin Oden <joden@lee.k12.nc.us>  at INTERNET
Date:    06/22/1999 2:24 PM

Just change that $ret to @ret, and it will return the entire row. 
After that your code becomes something like:      $query = "Select
username,password,knickname,emailaddy,forward,ip,date from temp";  $conn = Pg::connectdb("dbname=$dbname");   $result =
$conn->exec($query); while (@row = $result->fetchrow) {        @row = join("|", @row);  }
 

robert_hiltibidal_at_cms08405@ccmailgw.state.il.us wrote:
> 
>      Afternoon,
> 
>      intriguing... however, how do I go to the next row? I tried a
>      variation earlier that looked like:
> 
>      while (@row = $result->fetchrow) {
>            $string = join("\|",@row);
>            push(@set,$string);
>      }
>      $result = $conn->getResult;
> 
> 
>      I've also tried :
> 
>      while ($result = $conn->getResult) {
>            while (@row = $result->fetchrow) {
>                   $string = join("\|",@row);
>            }
>            push(@set,$string);
>      }
> 
> 
>      The goal is to get multiple rows into a single array. The answer is
>      probally very simple.
> 
Looks like you caught my "|" error (-;  Seriously, I though the
following should do it:
     while (@row = $result->fetchrow) {           $string = join("\|",@row);           push @set, ($string);     }

If though you wanted to put them in a multidimensional array (well
really a list of references to lists then you would do something like:
     while (@row = $result->fetchrow) {           push @set, (@row);     }

and then you would reference each element like this:
  $set[$i][$j]

or:
  $set[$i]->[$j]

depending on your mood.

...james

Sorry I did not catch up with the original question; I believe things
you discuss here are better answered by reading "man perldata" or "man
perlref". But let me make a few comments, anyway.

> Looks like you caught my "|" error (-;  Seriously, I though the
> following should do it:
> 
>       while (@row = $result->fetchrow) {
>             $string = join("\|",@row);
>             push @set, ($string);
>       }
> 
> If though you wanted to put them in a multidimensional array (well
> really a list of references to lists then you would do something like:
> 
>       while (@row = $result->fetchrow) {
>             push @set, (@row);
>       }

{push @set, ($string)} is the same as {push @set, $string} or {push (@set, $string)}

{push @set, (@row); is the same as {push @set, @row} or {push @set, $row[0], $row[1], ...}

There is no such thing as multidimensional array in perl. 

One can simulate multidimensional arrays by using arrays of
references. You probably wanted to say,

push @set, [@row];

or

push @set, \@row;


> 
> and then you would reference each element like this:
> 
>    $set[$i][$j]
> 
> or:
> 
>    $set[$i]->[$j]
> 
> depending on your mood.


which would now now be true.

--Gene