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Dafny

Dafny is an imperative and functional compiled language that compiles to other programming languages, such as C#, Java, JavaScript, Go, and Python. It supports formal specification through preconditions, postconditions, loop invariants, loop variants, termination specifications and read/write framing specifications. The language combines ideas from the…

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Designed by
K. Rustan M. Leino
Developer
Microsoft Research
Filename extensions
.dfy
First appeared
2009; 17 years ago (2009)
License
MIT
Paradigm
Imperative, functional

Topics to explore

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Overview

Data types

Loop invariants

Proof features

Advanced semantic analysis

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Map overview Semantic statistics

Dafny

Nodes38
Edges37
Triples58
Avg. degree1.95
Density0.052632
Components1

How this topic connects Entity context

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Dafny

Top relations

related to Further reading · 19
Dafny → Apress, Bertrand, Boro, Dafny Language, Elba Island, International Summer School, Introducing Software Verification, ISBN, Italy, LASER, Martin, Meyer, Nordio, Practical Software Verification, Proving Program Correctness, Revised Tutorial Lectures, Sitnikovski, Springer, Tools
related to Loop invariants · 11
Dafny → From, Hoare, However, In, Information, Length, NOP, The, This, To, Variables
related to Proof features · 8
Dafny → Although, As, Case, Here, NatSumLemmaproves, Specifically, The, This
related to External links · 5
Dafny → Functional Correctness, GitHub, Language, Microsoft ResearchDafny, Program Verifier
related to Imperative features · 3
Dafny → Likewise, The, This
related to Data types · 2
Dafny → Any, Methods
Designed by · 1
Dafny → K. Rustan M. Leino
Developer · 1
Dafny → Microsoft Research
Filename extensions · 1
Dafny → .dfy
First appeared · 1
Dafny → 2009; 17 years ago (2009)

Important terminology Word statistics

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Important terminology

loop verification language imperative proof functional programming specification also invariants inductive logic software features known program includes java microsoft research

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
DafnyDesigned byK. Rustan M. Leino1.00infobox
DafnyDeveloperMicrosoft Research1.00infobox
DafnyFilename extensions.dfy1.00infobox
DafnyFirst appeared2009; 17 years ago (2009)1.00infobox
DafnyLicenseMIT1.00infobox
DafnyParadigmImperative, functional1.00infobox
DafnyStable release4.11.0 / August 25, 2025; 11 months ago (2025-08-25)1.00infobox
DafnyTyping disciplineStatic, strong, safe1.00infobox
DafnyWebsitedafny.org1.00infobox
Dafnyis aimperative and functional compiled language that compiles to other programming languages0.90text
Dafnyrelated to Data typesMethods0.60section
Dafnyrelated to Data typesAny0.60section

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    Min side: 3
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