Difference between static scope and dynamic scope in compiler design
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Dynamic scope refers to scope of a variable is defined at run time rather than at compile time. Perl language allows dynamic scoping. Coming to your question a=2,b=3 are defined in fun1() which is the most recent scope and dynamic scope for a,b variables
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Static scoping is also called lexical scoping. In this scoping a variable always refers to its top level environment. ... In contrast, dynamic scope requires the programmer to anticipate all possible dynamic contexts.
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