fix prefix option

[michaelfung]

set prefix option according to etcd API

[foobargeez]

Your approach is much simpler and cleaner -- thanks. I currently use a much-complicated solution :-/ -- something like below:

sub BinaryToASCII ($bin) {
  return unpack("A*", pack("B*", $bin));
}

$range_end = BinaryToASCII("0" . Math::BigInt->from_bin($range_key)->binc()->to_bin());

I should have raised a PR to be included in the module earlier (or a simplified version of it) :-/

[hexfusion]

@michaelfung, thanks for the contribution! This looks good, could you also update the POD on the prefix accessor while we are here?

perl-net-etcd/lib/Net/Etcd/Auth/RolePermission.pm

Lines 99 to 104 in 30a7127

	=head2 prefix
	This is a helper accessor which is an alias for range_end => "\0" if passed a true value.
	If range_end is also passed prefix will superceed it's value.
	=cut

[hexfusion]

ref: #53

[hexfusion]

@michaelfung, thanks again. I will cut a new release for CPAN Monday morning.

[hexfusion]

@michaelfung https://github.com/hexfusion/perl-net-etcd/releases/tag/v0.022 is on it's way to CPAN. Thanks again!