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A formal expression is a kind of string of symbols, created by the same production rules as standard expressions, however, they are used without regard to the meaning of the expression. In this way, two formal expressions are considered equal only if they are syntactically equal, that is, if they are the exact same expression.
Expression (linguistics), a word, phrase, or sentence; Expression (mathematics), Symbolic description of a mathematical object; Fixed expression, a form of words with a specific meaning; Idiom, a type of fixed expression; Metaphorical expression, a particular word, phrase, or form of words that has a different meaning than its literal form
A proverbial phrase or expression is a type of conventional saying similar to a proverb and transmitted by oral tradition. The difference is that a proverb is a fixed expression, while a proverbial phrase permits alterations to fit the grammar of the context. [1] [2] In 1768, John Ray defined a proverbial phrase as:
A regular expression (shortened as regex or regexp), [1] sometimes referred to as rational expression, [2] [3] is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings , or for input validation .
A rational algebraic expression (or rational expression) is an algebraic expression that can be written as a quotient of polynomials, such as x 2 + 4x + 4. An irrational algebraic expression is one that is not rational, such as √ x + 4.
Said of an expression or term that describes something which existed before the phrase itself was introduced or became common. Example: Alan Turing was a computer scientist ante litteram, since the field of "computer science" was not yet recognized in Turing's day. ante meridiem (a.m.) before midday: From midnight to noon; confer post meridiem ...
Move over, Wordle, Connections and Mini Crossword—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity ...
In computer science, an expression is a syntactic entity in a programming language that may be evaluated to determine its value. [1] It is a combination of one or more constants, variables, functions, and operators that the programming language interprets (according to its particular rules of precedence and of association) and computes to produce ("to return", in a stateful environment ...