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In which type of language is a closure never necessary?     dynamically scoped language that does NOT support nested subprograms     static scoped language that does support nested subprograms     static scoped language that does NOT support nested subprograms     dynamically scoped language that does support nested subprograms

In which type of language is a closure never necessary?     dynamically scoped language that does NOT support nested subprograms     static scoped language that does support nested subprograms     static scoped language that does NOT support nested subprograms     dynamically scoped language that does support nested subprograms

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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  1. In which type of language is a closure never necessary?

       

    dynamically scoped language that does NOT support nested subprograms
       

    static scoped language that does support nested subprograms
       

    static scoped language that does NOT support nested subprograms
       

    dynamically scoped language that does support nested subprograms
Expert Solution
Step 1

Answer:

Closures are useful in the following cases:

  • dynamically scoped language that does NOT support nested subprograms.
  • static scoped language that does support nested subprograms
  • dynamically scoped language that does support nested sub programs.

 

 

 

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