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Re^3: map syntax error -- weirdby LanX (Saint) |
on Mar 22, 2013 at 10:39 UTC ( [id://1024916]=note: print w/replies, xml ) | Need Help?? |
oops true! =)
"{" starts both hash references and blocks, so "map { ..." could be either the start of map BLOCK LIST or map EXPR, LIST. Because perl doesn’t look ahead for the closing "}" it has to take a guess at which its dealing with based what it finds just after the "{". Usually it gets it right, but if it doesn’t it won’t realize something is wrong until it gets to the "}" and encounters the missing (or unexpected) comma. The syntax error will be reported close to the "}" but you’ll need to change something near the "{" such as using a unary "+" to give perl some help: Since PBP "map EXPR, LIST" fell completely out of my scope, but it explains why a hash-ref could even be considered valid here.
Cheers Rolf ( addicted to the Perl Programming Language)
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