Path: utzoo!attcan!uunet!mcsun!hp4nl!ruuinf!henkp
From: henkp@ruuinf.cs.ruu.nl (Henk P. Penning)
Newsgroups: comp.lang.perl
Subject: bug, feature, or what ??
Message-ID: <4138@ruuinf.cs.ruu.nl>
Date: 29 Oct 90 21:23:34 GMT
Organization: Utrecht University, Dept. of CS
Lines: 41

# Why is it that:

@row = 1..8 ;      print join(',',@row), ".\n" ;
$#row = 3 ;        print join(',',@row), ".\n" ;
splice(@row,0,4) ; print join(',',@row), ".\n" ;
$#row += 4 ;       print join(',',@row), ".\n" ;

# prints out:
# 1,2,3,4,5,6,7,8.
# 1,2,3,4.
# .
# ,,,.

# instead of:
# 1,2,3,4,5,6,7,8.
# 1,2,3,4.
# .
# 5,6,7,8.

# Empty arrays can sometimes be (re-)extended, see fi:

@row = 1..8 ;      print join(',',@row), ".\n" ;
$#row = -1 ;       print join(',',@row), ".\n" ;
$#row = 7 ;        print join(',',@row), ".\n" ;

# prints out:
# 1,2,3,4,5,6,7,8.
# .
# 1,2,3,4,5,6,7,8.

__END__

Can I see through this mistery with the knowledge of 'The Book' ?
I couldn't find it in the One True Man Page.

			===  HenkP  ===
-- 
Henk P. Penning, Dept of Computer Science, Utrecht University.
Padualaan 14, P.O. Box 80.089, 3508 TB Utrecht, The Netherlands.
Telephone: +31-30-534106
e-mail   : henkp@cs.ruu.nl (uucp to hp4nl!ruuinf!henkp)