Re^2: Error with doublequotes in map

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.

Comment on Re^2: Error with doublequotes in map Download Code

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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]