Combination of functions, variables, etc. in a computer program that returns a value
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4 identifiers linking expression across the web's reference databases
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In computer science, an expression is a syntactic entity in a programming language that may be evaluated to determine its value of a specific semantic type. It is a combination of one or more constants, variables, functions, and operators that the programming language interprets and computes to produce another value. In simple settings, the resulting value is usually one of various primitive types, such as string, boolean, or numerical.