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Symbol table in computer science, a symbol table is a data structure used by a language translator such as a compiler or interpreter, where each identifier, symbol, constant, procedure and. The ast is used intensively during semantic analysis, where the compiler checks for correct usage of the elements of the program and the language The compiler also generates symbol tables. Principles, techniques, and tools[1] is a computer science textbook by alfred v Lam, ravi sethi, and jeffrey d Ullman about compiler construction for programming. Symbols can be used as identifiers In some programming languages, they are. Principles of compiler design, by alfred aho and jeffrey ullman, is a classic textbook on compilers for computer programming languages Both of the authors won the 2020 turing award for their. An intermediate representation (ir) is the data structure or code used internally by a compiler or virtual machine to represent source code An ir is designed to be conducive to further. In computer science, a symbolic language, or assembly language, is a language that uses characters or symbols to represent concepts, such as mathematical operations and the entities.