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"Any more or less real programming language is more complex than an arithmetic expression language with only four operations so any 'lessons' from such a simple example is inapplicable to anything else."


The point is that this article says it wants to introduce parsing. But parsing a language that can be parsed by string splitting is not meaningful.

If there isn't even the most basic complexity then it's hardly worth claiming you're introducing parsing.


It also says it's LL(1) recursive descent, so you should already know what that includes.




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