Re: [perl #54974] Strange map {} Behavior When Returning Two Values

On Sat, May 31, 2008 at 11:34:22PM +0200, Bo Lindbergh wrote:
> In article <60CB2FCC-7405-4026-8119-4F7851F5BBB8@pobox.com>,
>  gbarr@pobox.com (Graham Barr) wrote:
> 
> >    %hash = map +( lc($_), 1 ), @array  # this is EXPR and works!
> 
> Add a note to perlop.pod about unary + being so utterly no-op that
> it doesn't even force scalar context?


Three quarters of the description of unary "+" is already dedicated
to describe exactly the situation above. Mentioning context doesn't
improve the current description, IMO. In fact, saying it doesn't force
scalar context will have some people assume it forces list context.



Abigail

• [perl #54974] Strange map {} Behavior When Returning Two Values by David Wheeler
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by H.Merijn Brand
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Aristotle Pagaltzis
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by David Nicol
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Abigail
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Glenn Linderman
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Graham Barr
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Bo Lindbergh
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Abigail
• [perl #54974] Strange map {} Behavior When Returning Two Values by A. Pagaltzis via RT
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by David E. Wheeler
• [perl #54974] Strange map {} Behavior When Returning Two Values by A. Pagaltzis via RT
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Rafael Garcia-Suarez
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by Aristotle Pagaltzis
• Re: [perl #54974] Strange map {} Behavior When Returning Two Values by David E. Wheeler