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Can anyone give me pointers to good books or web sites that teach how to do Flex programming?
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Flex is an acronym that stands for "fast lexical analyzer generator. " It is a free alternative to Lex, the standard lexical analyzer generator in Unix-based systems. Flex was originally written in the C programming language by Vern Paxson in 1987.
A flex program consists of three parts: the definition section, the rules section, and the user subroutines. The parts are separated by lines consisting of two percent signs. The first two parts are required, although a part may be empty. The third part and the preceding %% line may be omitted.
flex is a tool for generating scanners: programs which recognize lexical patterns in text. flex reads the given input files (or its standard input if no file names are given) for a description of the scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules .
Check out Ten Great Ways to Learn Flex, but I think number one should be to use the Quickstarts on the Adobe Site.
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