Question
Write an example explaining the use of symbol tables.
Answers
In perl the symbol table is a hash that contains the list of all the names defined in a namespace. It contains all the function and variable. For every namespace the hash is named after the namespace followed by colons.
For ex.
sub dispSymbols
{
my($hashRef) = shift;
my(%symbols);
my(@symbols);
%symbols = %{$hashRef};
@symbols = sort(keys(%symbols));
foreach (@symbols)
{
printf("%-10.10s| %s
", $_, $symbols{$_});
}
}
dispSymbols(\%Foo::);
package Foo;
$bar = 2;
sub baz
{
$bar++;
}   Your Comment




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