Re: example in book of Programming Perl does not work.

You wrote a wrong "-" symbol:

$ LC_ALL=C perl -E'my $pid = open(STDOUT, "|–") // die $!' # your quot
+e
No such file or directory at -e line 1.
$ perl -E'my $pid = open(STDOUT, "|-") // die $!' # entered via keyboa
+rd
$
[download]

Perl does not consider "–" (chr(8211)) to be a dash ("-", chr(45)), so special open behaviour does not work in this case.

Comment on Re: example in book of Programming Perl does not work. Download Code

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Re^2: example in book of Programming Perl does not work. by yangy (Novice) on May 30, 2013 at 08:51 UTC
thanks, I copy that char from pdf, now I change it to -,it work perfect now.	[reply]
Re^3: example in book of Programming Perl does not work. by MidLifeXis (Monsignor) on May 30, 2013 at 12:37 UTC
I wonder if there is a way to submit an errata to the publisher. Is there source code included along with the PDF file that would be more appropriate to use? `<muse>`I understand that typesetting has its own needs, but I wonder if there is any way to have the best of both worlds in a case like this.`</muse>` --MidLifeXis	[reply] [d/l] [select]
Re^4: example in book of Programming Perl does not work. by yangy (Novice) on May 30, 2013 at 15:27 UTC
I found it. source code of Programming Perl in oreilly web site. http://examples.oreilly.com/9780596004927/	[reply]
Re^2: example in book of Programming Perl does not work. by derby (Abbot) on May 30, 2013 at 12:43 UTC
That blasted unicode 'en-dash' is the bane of my existence. I know I should pray for patience but most of the time I pray for the hastening schadenfreude that will befall the designers who think their dashes deserve to be special. -derby	[reply]