Free Programming Tutorials

Parse::RecDescent is a combination compiler and interpreter. Thelanguage it uses can be thought of r
oughly as a macro language likeCPP’s, but the macros take no parameters. This may seem limiting, butthe technique is very powerful nonetheless. Our macro language lookslike this: macro_name : macro_bodyA colon separates the macro’s name and body, and the body can have anycombination of explicit strings (”string, with optional spaces”), aregular expression (/typical (?=perl) express 
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