great explanation. Makes perfect sense now. Many thanks. On Mar 18, 2012, at 9:52 AM, Daniel Perrett <dperrett@cambridge.org> wrote:

This is what looks like is happening:

$h is the empty string. $nodata_valu is a very big number.

($h == $nodata_valu) generates a warning because $h is not a number, it is the empty string. It also is false, so the 'else' is executed.

The sprintf statement coerces $h to a number then converts that number to a string with 2 decimal places.

The value of the sprintf is assigned to $h.

The debug line then prints the two scalars.

Daniel

-----dancer-users-bounces@perldancer.org wrote: ----- To: dancer-users <dancer-users@perldancer.org> From: "Mr. Puneet Kishor" Sent by: dancer-users-bounces@perldancer.org Date: 03/18/2012 02:54AM Subject: [Dancer-users] befuddling Dancer error

I have the following code

if (defined $h) { $h = ($h == $nodata_valu) ? $nodata_desc : sprintf("%.2f", $h); debug "h: $h, nodata: $nodata_valu"; }

which results in the following log entry

[63130] debug @0.154003> [hit #4]h: 0.00, nodata: -3.40282346638529e+38

Yet,I get the following Dancer error

Warning caught during route execution: Argument "" isn't numeric in numeric eq (==) at if (defined $h) { $h = ($h == $nodata_valu) ? $nodata_desc : sprintf("%.2f", $h); debug "h: $h, nodata: $nodata_valu"; }

what gives?

-- Puneet Kishor _______________________________________________ Dancer-users mailing list Dancer-users@perldancer.org http://www.backup-manager.org/cgi-bin/listinfo/dancer-users