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8.219. Tie::Memoize
Adds data to the hash when needed. That is, Tie::Memoize allows a
tied hash to autoload all its values on first access and to use the
cached value on subsequent accesses. Read accesses will result in one
of the Tie::Memoize functions being called. Write accesses will act
as if you're operating on a normal hash. For
example:
#!/usr/local/bin/perl -w
require Tie::Memoize;
tie %hash, 'Tie::Memoize', \&fetch, $DATA, \&exists,
{%ini_value}, {%ini_existence};
sub fetch { ... }
sub exists { ... }
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| 8.218. Tie::Hash |  | 8.220. Tie::RefHash |
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