comment on

While using Tie::FlipFlop, I ran into a problem.

use Tie::FlipFlop;
tie my $flipflop => Tie::FlipFlop => ( 'white', 'black' );

print qq|$flipflop\n|;
print qq|$flipflop\n|;
print qq|$flipflop\n|;
print qq|$flipflop\n|;
[download]

Which prints:

black
black
black
black
[download]

While this:

use Tie::FlipFlop;
tie my $flipflop => Tie::FlipFlop => ( 'white', 'black' );

print $flipflop, qq|\n|;
print $flipflop, qq|\n|;
print $flipflop, qq|\n|;
print $flipflop, qq|\n|;
[download]

Prints this:

white
black
white
black
[download]

After a little investigating, I found that, when quoted, FETCH was being called twice in the module for each print. Why is the value fetched twice? And can this be trapped to return the desired result?

TIA,
Charles K. Clarkson
--
Head Bottle Washer,
Clarkson Energy Homes, Inc.
Mobile Home Specialists
254 968-8328

In reply to FETCHing twice in Tie::FlipFlop by CharlesClarkson

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