October 2016
Intermediate to advanced
320 pages
6h 39m
English
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Languages and grammars
In order for a parser to be able to understand a program, it needs a formal description of that language-a grammar. In this chapter, we will work with a so-called parsing expression grammar (PEG). A PEG is (relatively) easy to define and there are libraries that can generate a parser for a given grammar automatically.
A grammar consists of terminal symbols and non-terminal symbols. A non-terminal symbol is a symbol that maybe composed of several other symbols, following certain rules (production rules). For example, a grammar could contain a number as non-terminal symbol. Each number could be defined as an arbitrary-length sequence of digits. As a digit could then be any of the characters from 0 to 9 (with each of the actual ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.