SPUG: assigning to slice of anon hash?

[Doug Beaver]

On Wed, Jun 27, 2001 at 12:12:53PM -0700, El JoPe Magnifico wrote:
> Quick (hopefully) perl syntax question that I ran into last night.
> You can assign to a slice of a hash with the following:
> 
>   @hash{ @fields } = @values;
> 
> However, I can't figure out how to do the same with a hash ref.
> The following gives a runtime error, "Can't coerce array into hash",
> since the @{$ref} construct is generally how you deref an array ref:
> 
>   @{ $hash_ref }->{ @fields } = @values;
> 
> And the following (which wouldn't be syntactically consistent,
> but I tried just in case) doesn't do the trick either:
> 
>   %{ $hash_ref }->{ @fields } = @values;

require 'dumpvar.pl';
@fields = 'a'..'e';
@values = 1..5;

@hash{@fields} = @values;
dumpValue(\%hash); print "\n";

$h = {};
@$h{@fields} = @values;
dumpValue($h); print "\n";

$h = {};
@{ $h }{@fields} = @values;
dumpValue($h); print "\n";

You've already dereferenced the ref by sticking the @ in front of it, so
you don't need the ->...  Tested on 5.6.0.

Doug

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