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British linguist Michael K. Halliday proposes a useful dichotomy of spoken and written language which actually entails a shift in paradigm: while linguistic theory posits the superiority of spoken language over written language (as the former is the origin, comes naturally, and thus precedes the written language), or the written over the spoken ...
Attribute grammars can be understood as a denotational semantics where the target language is simply the original language enriched with attribute annotations. Aside from formal semantics, attribute grammars have also been used for code generation in compilers , and to augment regular or context-free grammars with context-sensitive conditions;
In lexicography [citation needed], a lexical item is a single word, a part of a word, or a chain of words that forms the basic elements of a language's lexicon (≈ vocabulary). [ citation needed ] Examples are cat , traffic light , take care of , by the way , and it's raining cats and dogs .
These generators are a form of domain-specific language, taking in a lexical specification – generally regular expressions with some markup – and emitting a lexer. These tools yield very fast development, which is very important in early development, both to get a working lexer and because a language specification may change often.
With respect to a language definition, the syntax of Comments can be classified many ways, including: Line vs. block – a line comment starts with a delimiter and continues to the end of the line ( newline marker) whereas a block comment starts with one delimiter and ends with another and can cross lines
In computer science, denotational semantics (initially known as mathematical semantics or Scott–Strachey semantics) is an approach of formalizing the meanings of programming languages by constructing mathematical objects (called denotations) that describe the meanings of expressions from the languages.
Computational semantics is the study of how to automate the process of constructing and reasoning with meaning representations of natural language expressions. [1] It consequently plays an important role in natural-language processing and computational linguistics .
The Java Language Specification requires a Java virtual machine to observe within-thread as-if-serial semantics. The runtime (which, in this case, usually refers to the dynamic compiler, the processor and the memory subsystem) is free to introduce any useful execution optimizations as long as the result of the thread in isolation is guaranteed ...