[26048] in Perl-Users-Digest
Perl-Users Digest, Issue: 8256 Volume: 10
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Sun Jul 17 09:05:45 2005
Date: Sun, 17 Jul 2005 06:05:06 -0700 (PDT)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Sun, 17 Jul 2005 Volume: 10 Number: 8256
Today's topics:
Re: 01.0 == 10 ??? <joe@inwap.com>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
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Date: Sun, 17 Jul 2005 05:23:37 -0700
From: Joe Smith <joe@inwap.com>
Subject: Re: 01.0 == 10 ???
Message-Id: <Toudne_fRe0h0EffRVn-1w@comcast.com>
kj wrote:
> % perl -wle 'print 01.'
> syntax error at -e line 1, at EOF
> -e had compilation errors.
> % perl -wle 'print 01.0'
> 10
Here's some more:
% perl -le 'print 020.abc'
16abc
% perl -le 'print 009'
Illegal octal digit '9' at -e line 1, at end of line
Execution of -e aborted due to compilation errors.
In the first one, 020 (octal) is 16 (decimal), and barewords
act like quoted literals, same as 'print 16."abc"'.
The second one is self explanatory once you recognize that
a leading zero in numeric literals in the source code indicates
an octal number. (And "0xFF" is hexadecimal for 255.)
-Joe
------------------------------
Date: 6 Apr 2001 21:33:47 GMT (Last modified)
From: Perl-Users-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin)
Subject: Digest Administrivia (Last modified: 6 Apr 01)
Message-Id: <null>
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End of Perl-Users Digest V10 Issue 8256
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