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Loop invariant

In computer science, a loop invariant is a property of a program loop that is true before (and after) each iteration. It is a logical assertion, sometimes checked with a code assertion. Knowing its invariant(s) is essential in understanding the effect of a loop.

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Overview

Informal example

Floyd–Hoare logic

Programming language support

Use of loop invariants

Distinction from loop-invariant code

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Loop invariant

Nodes44
Edges43
Triples66
Avg. degree1.95
Density0.045455
Components1

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Loop invariant

Top relations

related to Further reading · 45
Loop invariant → Algorithms, Charles, Clifford Stein, Computer Programming, Computer Science, Cormen, David Gries, David Notkin, Dynamically Discovering Likely Program, Efficient Computation, Ernst, Griswold, IEEE Software, Insertion, International Conference, Introduction, Invariants, ISBN, Jake Cockrell, January
related to Informal example · 11
Loop invariant → Both, Comments, Each, Following, However, In, It, The, They, When, While
related to Whiley · 5
Loop invariant → For, Loop, The, The Whiley, Themax
related to Eiffel · 2
Loop invariant → In, The Eiffel
related to Use of loop invariants · 2
Loop invariant → Floyd, Hoare
is a · 1
Loop invariant → property of a program loop that is true before

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Important terminology

loop invariant invariants program code true displaystyle following programming rule one 10 computer science hoare body leq example language support

Entity relationships Subject–Predicate–Object triples

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SubjectPredicateObjectConfidenceSrc
Loop invariantis aproperty of a program loop that is true before0.90text
Loop invariantrelated to EiffelThe Eiffel0.60section
Loop invariantrelated to EiffelIn0.60section
Loop invariantrelated to Further readingThomas0.60section
Loop invariantrelated to Further readingCormen0.60section
Loop invariantrelated to Further readingCharles0.60section
Loop invariantrelated to Further readingLeiserson0.60section
Loop invariantrelated to Further readingRonald0.60section
Loop invariantrelated to Further readingRivest0.60section
Loop invariantrelated to Further readingClifford Stein0.60section
Loop invariantrelated to Further readingIntroduction0.60section
Loop invariantrelated to Further readingAlgorithms0.60section

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