So you want something like this to work: 

    my %mapping = ( ARRAY  => '@', HASH   => '%', SCALAR => '$',
                    GLOB   => '*', REF    => '$', CODE   => '&' );
    return eval $mapping{$type}.'{$_[0]}';

[download]
Note that your old code used eval "$mapping{$type}{$_[0]}" which ends up trying to run code like "$SCALAR(0xbadf00)", which doesn't do much good.

My code above expands out to: 

return @{$_[0]}   if  $type eq "ARRAY";
return %{$_[0]}   if  $type eq "HASH";
return ${$_[0]}   if  $type eq "SCALAR";
return *{$_[0]}   if  $type eq "GLOB";
return ${$_[0]}   if  $type eq "REF";
return &{$_[0]}   if  $type eq "CODE";

[download]
but a more correct version of this useless code would be: 
my( $ref )= @_;
$ref= $$ref   while  UNIVERSAL::isa($ref,"REF");
return @$ref   if  UNIVERSAL::isa($ref,"ARRAY");
return %$ref   if  UNIVERSAL::isa($ref,"HASH");
return $$ref   if  UNIVERSAL::isa($ref,"SCALAR");
return &$ref() if  UNIVERSAL::isa($ref,"CODE");
return $$ref,@$ref,%$ref   if  UNIVERSAL::isa($ref,"GLOB");

[download]
Now if you really want to try to use stringy eval for this, feel free. It seems like a waste to me. And, no, block eval would do you no good in this, unless you use it to make some fatal errors non-fatal (which is what block eval is for), such as using @$ref when $ref is a reference to something other than array.

        - tye (but my friends call me "Tye")

In reply to (tye)Re2: Eval and $@% ... by tye
in thread Eval and $@% ... by dragonchild

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