regular expression
regular expression An expression built from finite formal languages (i.e. finite sets of strings) using the operations of union, concatenation, and Kleene star. For example, the following two regular expressions each denote the set of all strings of alternating as and bs: {a,Λ} {ba}* {Λ,b} {ba}* ∪ {a}{ba}* ∪ {ba}*{b} ∪ {a}{ba}*{b}
where Λ is the empty string. A language is regular if and only if it is representable by a regular expression. Thus the class of regular languages is the smallest one that contains all finite languages and is closed under concatenation, union, and star – the so-called regular operations. These three operations correspond to “sequence”, “choice”, and “iteration” in structured iterative programs.
where Λ is the empty string. A language is regular if and only if it is representable by a regular expression. Thus the class of regular languages is the smallest one that contains all finite languages and is closed under concatenation, union, and star – the so-called regular operations. These three operations correspond to “sequence”, “choice”, and “iteration” in structured iterative programs.
More From encyclopedia.com
Regular Sample , regular sample (systematic sample) One of a number of samples taken at regular intervals (e.g. by the use of regularly spaced quadrats along some env… Scapula , Skip to main content
Scapula
scapula •ampulla, bulla, fuller, Müller, pula, puller •titular • Weissmuller • wirepuller •incunabula, tabular •preambul… Prism , Prism
In Euclidean geometry, a prism is a three-dimensional figure, or solid, having five or more faces, each of which is a polygon. Polygons, in tur… Spain, Portugal, Italy, Greece, and the Balkans , pula •ampulla, bulla, fuller, Müller, pula, puller •titular • Weissmuller • wirepuller •incunabula, tabular •preambular • glandular • coagula •angula… express , ex·press1 / ikˈspres/ • v. [tr.] 1. convey (a thought or feeling) in words or by gestures and conduct: he expressed complete satisfaction. ∎ (express… irregular , ir·reg·u·lar / iˈregyələr/ • adj. 1. not even or balanced in shape or arrangement: her features were too irregular. ∎ occurring at uneven or varying…
You Might Also Like
NEARBY TERMS
regular expression