Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Re: Re: Best Way to Redirect STDERR to a Scalar

by shenme (Priest)
on Sep 14, 2003 at 04:23 UTC ( #291345=note: print w/ replies, xml ) Need Help??


in reply to Re: Best Way to Redirect STDERR to a Scalar
in thread Best Way to Redirect STDERR to a Scalar

While attractive, this is just one more way of tieing the STDERR glob.   Because this nor any of the other tie methods 'really' hook into the filehandle used by STDERR they don't help capture the low-level references to STDERR (aka fileno(STDERR)==2) done by code like Devel::Peek.

Tested with the following code it fails the "warn test" and testing versus Mr. Muskrat's target Devel::Peek:

use IO::Capture::Stderr; use Devel::Peek; my $data; print STDERR " STDERR test (1)\n"; my $capture = IO::Capture::Stderr->new(); $capture->start(); print STDERR " STDERR test (2)\n"; warn " STDERR test (2a)"; my $test = 'string'; Dump($test); $capture->stop(); print STDERR " STDERR test (3)\n"; my @the_output = $capture->read; if( @the_output ) { foreach (@the_output) { print " >>> ", $_; } }
produces output
 STDERR test (1)
 STDERR test (2a) at mrmskrat4.pl line 15.
SV = PV(0x183ec0c) at 0x197138c
  REFCNT = 1
  FLAGS = (PADBUSY,PADMY,POK,pPOK)
  PV = 0x196deb4 "string"\0
  CUR = 6
  LEN = 7
 STDERR test (3)
  >>>  STDERR test (2)


Comment on Re: Re: Best Way to Redirect STDERR to a Scalar
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://291345]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others surveying the Monastery: (11)
As of 2014-07-22 12:28 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite superfluous repetitious redundant duplicative phrase is:









    Results (113 votes), past polls