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Would it be useful then perhaps, to have the ablity to mark a variable as readonly if current scope is below the scope in which a variable was declared?

ie. Variable can only be modified within the scope it was declared and not somewhere below?

use strict; use warnings; my $g1; my $g2 :resticted ; #or some other attribute mechanism $g1 = 'boo'; $g2 = 'blah'; { $g1 = 'changed' ; #OK. Same behaviour as now $g2 = 'cant change'; #Can't do this, ideally throw an exceptio +n my $copy_of_g2 = $g2; #OK. I can still read $g2. } print "$g1\n" print "$g2\n" __END__ changed blah
I have no idea if this is possible (which I actually consider secondary), I'm asking if anyone else thinks this type of functionality would be useful to have. Or if this behaviour is already available which module(s) provide it.

In reply to Re^2: Best practices with globals and subroutine arguments by desemondo
in thread Best practices with globals and subroutine arguments by Foxpond Hollow

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