'Post condition' presentation slideshows

903 views • 81 slides

Semantics

Semantics. Describing the meanings of Programs:. Programmers need to know precisely what the statements of a language do. English explanations in language manuals are often imprecise and incomplete. Semantics formalisms are needed by programmers and compiler writers. Operational Semantics.

874 views • 65 slides

Semantics

Semantics. Describing the meanings of Programs:. Programmers need to know precisely what the statements of a language do. English explanations in language manuals are often imprecise and incomplete. Semantics formalisms are needed by programmers and compiler writers. Operational Semantics.

879 views • 64 slides

White Box and Black Box Testing

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Static Techniques for V&V

Static Techniques for V&V. Hierarchy of V&V techniques. V&V. Dynamic Techniques. Static Techniques. Informal Analysis. Formal Analysis. Testing. Symbolic Execution. Simulation. Model Checking. Static Analysis. Walkthrough. Inspection. Proofs. Review. Analysis.

609 views • 36 slides

Correctness

Correctness. Quality Perceptions. The perception of quality associated with your code is typically bound to: Correctness Efficiency (speed of execution usually) Cost (if it costs more, it must be better right?) Robustness Flexibility Functionality Maintainability Security Usability

475 views • 34 slides

Correctness

Correctness. Quality Perceptions. The perception of quality associated with your code is typically bound to: Correctness Efficiency (speed of execution usually) Cost (if it costs more, it must be better right?) Robustness Flexibility Functionality Maintainability Security Usability

573 views • 34 slides

Lecture 3 Uses Cases

Lecture 3 Uses Cases. CSCE 492 Software Engineering. Topics UML Use Cases pop quiz Readings: Chapter 3. January 24, 2008. Overview. Last Time Corrections to slides: Added spiral model figure 492Website/Resources/SpiralModelBoehm.pdf Rational Unified Process, Extreme Programming XP

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CSE 331 Software Design & Implementation

Alan Perlis ? Epigrams ?. It is easier to write an incorrect program than understand a correct one. CSE 331 Software Design & Implementation. Most people find the concept of programming obvious, but the doing impossible.

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Adding Contracts to Ada

Adding Contracts to Ada. Adding Design By Contract to Ada. Ehud Lamm. ADT + Contracts. type Stack is tagged private; procedure Init(S:out Stack); procedure Push(S:in out Stack; I:in Integer) at exit Size(S)=old Size(S)+1; procedure Pop(S:in out Stack;I:out Integer)

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TECHNICAL UNIVERSITY OF CRETE DEPT OF ELECTRONIC AND COMPUTER ENGINEERING

TECHNICAL UNIVERSITY OF CRETE DEPT OF ELECTRONIC AND COMPUTER ENGINEERING. DATA STRUCTURES AND FILE STRUCTURES Euripides G.M. Petrakis http://www.intelligence.tuc.gr/~petrakis Chania, 2007. Introduction. We study data structures and we learn how to write efficient programs

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The Substitution Principle

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David Evans cs.virginia/~evans

Lecture 19: Minding Ps & Qs: Axiomatic Semantics and Program Verification. David Evans http://www.cs.virginia.edu/~evans. It is easier to write an incorrect program than understand a correct one. Alan Perlis. CS655: Programming Languages University of Virginia Computer Science.

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The Substitution Principle

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George Mauer Senior Developer Westway Terminal Co gmauer@gmail Twitter: @togakangaroo

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4S-WfM

4S-WfM. S imple S emantic S tructured S erviceable W ork f low M anagement. Aff@ri. Knowledge. Experience. Aff@ri: enterprise auto-poiesis by know/exp thai-chi. RESOURCE. Governance. Development. BUSINESS. Stakeholders. Business Community. properly!. stakeholders. make.

248 views • 13 slides

Variables as Containers

Variables as Containers. Variables have: Name Type Data. int length; l ength = 7;. Conditional Statements. if(condition) statement; if(length < 7) { statements; statements; }. Operators. < Less than <= Less than or equal > Greater than >= Greater than or equal == Equal to

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Introduction to Logical Proof

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Pre and Post Condition Rules

Pre and Post Condition Rules. Definition : If R and S are two assertions, then R is said to be stronger than S if R -> S (R implies S). Example : the assertion i < 0 is stronger than the assertion i < 3 because i < 0 implies that i < 3 ( i < 0 is true implies that i < 3 is true)

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Minimum Spanning Trees Quiz (Easy)

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