[LON-CAPA-dev] Globals considered harmful (was A lesson in globals)

[Ron Fox]

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An even larger issue with globals is that they tie the implementation
to them.
Far better to provide acessing functions to any global data that hide
the form and structure of the data from the 'client'. For example:

my $client;

# yada yada yada

proc GetClient {
  return $client;
}

Now nobody knows how this piece of data is maintained except those
reponsible
for maintaining it.  This is >good<

Ron

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