Behavioral Design Patterns in C++ - Introduction-Interpreter

The video tutorial discusses the interpreter design pattern, which is used to interpret data by defining a grammar and using an interpreter to process input. It is useful in applications like language translation, command line argument parsing, and domain-specific languages like SQL. The pattern involves creating objects to represent grammar rules, with terminal and non-terminal expressions forming the structure. The tutorial also covers optimizations like using a visitor for frequently changing interpretations and implementing terminal expressions as flyweights. The interpreter pattern does not include parsing, which must be implemented separately.

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