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Meaning of LOOK AHEAD LEFT-TO-RIGHT PARSE, RIGHTMOST-DERIVATI

 
Computing Dictionary
 
 Definition: 

(LALR, Look ahead LR) A type of lr parser that can deal with more context-free grammars than slr parsers but less than lr[1] parsers. LALR parsers are popular because they give a good trade-off between the number of grammars they can deal with and the size of the parsing table required. Compiler compilers like yacc and bison generate LALR parsers.

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