Re^2: implicit numeric conversion isn't

Thanx for the tip. The following code

  my $hash = RRDs::info( $datafile );
  my $hStep = $hash->{'step'};
Dump $hStep;
$hStep='301';
Dump $hStep;

PV shows what I want in each case, but the two have different FLAGS. Any of them make any sense to you. generates:

SV = PVIV(0x8b82158) at 0x832c55c
  REFCNT = 1
  FLAGS = (PADBUSY,PADMY,IOK,POK,pIOK,pPOK)
  IV = 300
  PV = 0x8c2ee40 "300"\0
  CUR = 3
  LEN = 4
SV = PVIV(0x8b82158) at 0x832c55c
  REFCNT = 1
  FLAGS = (PADBUSY,PADMY,POK,pPOK)
  IV = 300
  PV = 0x8c2ee40 "301"\0
  CUR = 3
  LEN = 4

Comment on Re^2: implicit numeric conversion isn't

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Re^3: implicit numeric conversion isn't by syphilis (Archbishop) on Nov 25, 2006 at 00:57 UTC
Neither of those variables that Dump() has displayed would cause the error you see. It would be fine to use either of those 2 with the modulus operator. Somehow, your program is seeing some other value that equates to (or is) zero. (Are warnings enabled ?) What's happening between `my $step = $hash->{'step'};` and `my $mid = $lupdate % $step ;` in your code ? Cheers, Rob	[reply] [d/l] [select]
Re^4: implicit numeric conversion isn't by stargrazer (Novice) on Nov 25, 2006 at 01:11 UTC
Here is a traceback: error: Illegal modulus zero at /var/www/distats.html line 187. context: ... 183: 184: my $hash = RRDs::info( $datafile ); 185: my $hStep = $hash->{'step'}; 186: my $lupdate = $hash->{'last_update'}; 187: my $mid = $lupdate % $hStep; 188: print( "$lupdate % $hStep = $mid\n" ); 189: $m->print( " ** lu=$lupdate, step=$hStep ref '" . ref($hStep) . "'\n" ); 190: Dump $hStep; 191: $hStep='301'; ... code stack: /var/www/distats.html:187 /usr/share/cricket/lib/ConfigTree/Cache.pm:93 /usr/share/cricket/lib/ConfigTree/Cache.pm:90 /var/www/distats.html:18 /var/www/_content:13 /var/www/autohandler:40 I have elsewhere above my code: use strict; use warnings; One other factoid is that this is using Mason. Which shouldn't get in the way. I also have some Cricket includes as well, which you can see this is the result of a Cricket call back. Well... I guess this is where I strip out all the other code bits and just put this one bit of code in and see what happens.	[reply]
Re^3: implicit numeric conversion isn't by quester (Vicar) on Nov 25, 2006 at 01:41 UTC
The first dump shows that the value of $hStep was set to the string "300" and converted to numeric (or vice versa.) My copy of RRDtool doesn't do that; only IOK is set and not POK. I'm using version 1.2.12 of RRDtool, the current is 1.2.15. You might want to check that you have a reasonably recent version of RRDtool, but as others have pointed out, that certainly isn't a direct cause of your zero modulus error.	[reply]