Re: Why doesn't Perl warn me about this bareword? (IO::Prompt prompt -line)

It's like the prefix equivalent of the fat arrow. Unary string minus.

       Unary "-" performs arithmetic negation if the operand is
       numeric.  If the operand is an identifier, a string con-
       sisting of a minus sign concatenated with the identifier
       is returned.
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Comment on Re: Why doesn't Perl warn me about this bareword? (IO::Prompt prompt -line) Download Code

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Re^2: Why doesn't Perl warn me about this bareword? (IO::Prompt prompt -line) by j3 (Friar) on Nov 15, 2006 at 20:24 UTC
Whoops! Thanks fishbot_v2. I don't know why my brain thought that minus sign was part of the identifier. Neat feature/trick. Makes function calls look somewhat like running shell commands.	[reply]
Re^3: Why doesn't Perl warn me about this bareword? (IO::Prompt prompt -line) by ikegami (Patriarch) on Nov 15, 2006 at 20:36 UTC
Well, the string returned by `-word` does include the `-`, so it's an easy mistake to make. `>perl -e "print -word -word` [download] Aside, I prefer `prompt -line => "Eh?: ";` over `prompt -line, "Eh?: ";` since the two form a name-value relation. Update: Oops, I thought `-line` and `"Eh?: "` were related.	[reply] [d/l] [select]
Re^4: Why doesn't Perl warn me about this bareword? (IO::Prompt prompt -line) by j3 (Friar) on Nov 15, 2006 at 20:49 UTC
Aside, I prefer `prompt -line => "Eh?: ";` over `prompt -line, "Eh?: ";` since the two form a name-value relation. Actually, according to the IO::Prompt docs (the ascii-table in the INTERFACE section), `-line` doesn't actually take an argument, and so looks to me like it doesn't actually have a name-value relationship with the prompt string.	[reply]