Two and a Half Men featured Angus T. Jones.
In formal language theory , an LL grammar is a formal grammar that can be parsed by an LL parser , which parses the input from Left to right , and constructs a Leftmost derivation of the sentence -LRB- hence LL , compared with LR parser that constructs a rightmost derivation -RRB- .. formal language theory. formal language theory. formal grammar. formal grammar. parsed. parsing. LL parser. LL parser. LR parser. LR parser. A language that has an LL grammar is known as an LL language .. These form subsets of deterministic context-free grammars -LRB- DCFGs -RRB- and deterministic context-free languages -LRB- DCFLs -RRB- , respectively .. One says that a given grammar or language `` is an LL grammar / language '' or simply `` is LL '' to indicate that it is in this class .. LL parsers are table-based parsers , similar to LR parsers .. LL grammars can alternatively be characterized as precisely those that can be parsed by a predictive parser -- a recursive descent parser without backtracking -- and these can be readily written by hand .. parsed. parsing. predictive parser. predictive parser. recursive descent parser. recursive descent parser. backtracking. backtracking. This article is about the formal properties of LL grammars ; for parsing , see LL parser or recursive descent parser .. LL parser. LL parser. recursive descent parser. recursive descent parser