Re: Error with doublequotes in map

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Re^2: Error with doublequotes in map by Fletch (Bishop) on Feb 12, 2007 at 18:32 UTC
Yup, it's thinking it's the LIST form with a hashref missing a trailing comma before the empty parens rather than BLOCK. If you parenthesize things it'll behave as well. `$ perl -MO=Deparse,-p -Mstrict -Mwarnings -e 'map{("$_" => 1)} ();' use warnings; use strict 'refs'; map({("$_", 1);} ()); -e syntax OK` [download] Strange and surprising, yes. "Bug", hrmmm . . . I'd say more ambiguous corner of the grammar.	[reply] [d/l]
Re^3: Error with doublequotes in map by bart (Canon) on Feb 12, 2007 at 21:05 UTC
Just for convenient reference: The standard ways to help Perl interpret expression (hash ref) vs. block correctly, is like this: `map +{ "$_" => 1 }, @list # + => expression (hash ref) (+ comma) map {; "$_" => 1 } @list # ; => block (no comma)` [download]	[reply] [d/l]
Re^3: Error with doublequotes in map by mreece (Friar) on Feb 12, 2007 at 23:06 UTC
interestingly enough, if you leave the `-p` off of Deparse, it gives you `map {"$_", 1;} ();` [download] which perl says is a syntax error.	[reply] [d/l] [select]
Re^2: Error with doublequotes in map by bennymack (Pilgrim) on Feb 12, 2007 at 18:33 UTC
That makes a lot of sense! I'll pass it along. Thanks! Sorry for the Anonymous post. I didn't realize I wasn't logged in :\|	[reply]
Re^3: Error with doublequotes in map by diotalevi (Canon) on Feb 12, 2007 at 18:40 UTC
Also, use your perlbug program the next time you want to report a bug in perl. That goes to the people who actually deal with it. ⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊	[reply]
Re^4: Error with doublequotes in map by GrandFather (Saint) on Feb 12, 2007 at 20:19 UTC
Hmm, ok, but looks to me like OP didn't want to 'bug' the team with something that might be spurious, so raised it here first. Good on him I say. DWIM is Perl's answer to Gödel	[reply]