Respuesta :

True. Deep access and shallow access, the two implementation strategies for dynamic scoping, both offer the same semantics.

In a static-scoped language with stack-dynamic local variables and nested subprograms, what are the two phases for locating a nonlocal variable?

Finding the correct activation record first is the difficult part; the next step is to ascertain the offset within that activation record (easy part).

What are the two possible drawbacks of the static-chain approach?

Because the cost of each reference relies on the depth of nesting between the reference and the scope of declaration, it is challenging for a programmer working on a time-critical software to estimate the costs of nonlocal references.

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