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Pre- and postconditions Using assertions and exceptions
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staminaPoints = stamina; More on preconditions: ... After each invocation, query the object with the method stamina and report the result. ...
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Dynamic method dispatch based upon predicates ... Enclose the method body under the if's body ... these predicates in the method header, code becomes a lot ...
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DISCOVERING SEMANTIC RELATIONS BETWEEN WEB SERVICES USING THEIR PRE AND POST-CONDITIONS ... Identify semantic relations between two conditions using similarity value ...
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Postcondition: Moe, Larry, Curly, and Shemp totals have user-specified values; ... 2 is Curly, #3 is Shemp. int stoogeTotal; // The total number of survey ...
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Specifying Object Interfaces Preconditions, postconditions, invariants Preconditions, postconditions, invariants--definitions Example--stacks, queues, division Loop ...
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Measurements Acceptance Criterion Fit Criterion Test Criterion Measure of Effectiveness (MoE) Measure of Performance (MoP) Postcondition Minimal Guarantee
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Visual modeling and specification techniques are extremely useful for ... AToM3 emulates a syntax grammar (in some sense) with preconditions and postconditions ...
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Determine large scale 'clumps' and refine their behavior ... and postconditional invariants, which are ontological states assumed to be true ...
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F : Precondition formula describing input state. F' : Postcondition formula describing output state. Solution : Procedure Summaries ...
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Design by contract Object-Oriented Software Construction by Bertrand Meyer, Prentice Hall The presence of a precondition or postcondition in a routine is viewed as a ...
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... does what it does Parameters/return value How function modifies object Preconditions/postconditions Concurrency issues ... Industry standards ... and mobile phone ...
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Post condition rule: What can a subclass do with postconditions in supertype spec? ... Methods rule vs. Properties rule. Methods rule is for single method invocation ...
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... Value Parameters and Reference Parameters ... Postcondition: User has been prompted to enter a character // && letter == one of these input values: E,G,A, or P ...
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A precondition, Q characterizing the allowable initial states; A postcondition, R characterizing the allowable final states. Specification Cont. ...
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... with postcondition and determine what conditions must be true on entry ... Infinite number of paths, so we need one predicate for that captures the effect of S ...
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Every free occurrence of x in postcondition P is replaced by e. ... Input: a Java class source code. Translate the Java class into a plan representation ...
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Design by contract. Object-Oriented Software Construction by Bertrand Meyer, Prentice Hall ... The presence of a precondition or postcondition in a routine is ...
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http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secmod/htm l/secmod76.asp ... without touching target host. Postcondition: Attacker knows ...
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Roberts introduces postconditions into the refactoring process. ... in order to get more complicated transformation that can be applied or used in ...
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Annotate messages with pre- and postconditions (domain ... [Whittle and Schumann, 2000] 5/11/09. 9 pre {atm.cardIn=false} pre {atm.cardHalfWay=false} ...
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void throttle : : flow( ) const. Precondition : shut_off has been called at ... Postcondition : if the throttle's flow is above 0, then the function returns ...
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St. Malo, France, June 5-8, 2000. by. Pedro Guerreiro ... These two functions illustrate the idiom for postconditions in selectors. ...
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Different ways of representing, structuring and browsing the same Information System ... Meta-level. Guarantee of consistency: invariants, pre or postconditions. ...
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programmer. x is not null. x and y are disjoint lists. x is acyclic ... ask the programmer. use specifications. preconditions, postconditions, loop invariants ...
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Caption. Done. Delete. Edit. New Data Definition. Selection ... Caption. Instance Name. Event trigger. Precondition. State trigger. Postcondition. Cycle Number ...
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Challenges in Adapting Automated Planning for Autonomic Computing ... A is a set of actions, Ai with. Aipre (preconditions) Aipost (postconditions) drawn from P ...
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HACK: Add clause to postcondition Q do not consider executions that access outside of set X' ... Use hack, with X = address used in trace. Enjoy some relief ...
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But what to abstract in 'problem environment', 'representation' ... Components: preconditions, postconditions (ADD, DELETE lists) Clobbering / threatening ...
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The contract is expressed as a set of class invariants and method pre- and postconditions. ... The precondition of an overridden method must be weaker than the ...
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The information a client (caller) needs. What the routine does, not how it does it ... violation = bug in client (caller) Postcondition violation = bug in ...
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Peek -- examine, but don't remove item. stacks. 4. Stack operations ... Peek function // Precondition: stack is not empty // Postcondition: top item is revealed ...
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insert an element at the rear of the queue // Postcondition: the queue has one more element ... until we arrive at the end of the list. while (curr != NULL) ...
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For max, a postcondition is Q = m = max(a, b), where max is a mathematical ... For max, a and b can be any integers, so the precondition is P = true. ...
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Step 2. Write a postcondition, based on the spec, which says what is true at the ... 5. Set boolean v to the value of 'every element in Vector v is an object of ...
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This is described in the protocol in the postcondition DAV:checked-out-for-merge. ... dav/vcr/project1/main.c. This is a VCR for main.c in workspace 'project1' ...
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Pool of potential tasks for variable process part. New modelling object: Variable process part ... Throw. Exception. Get Precondition. Get task with ...
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Preconditions and Inheritance precondition what the method assumes to be true about the arguments passed to it inheritance (is-a) a subclass is supposed to be able to ...
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LORE: JDT2MDR. Bart DB. Transformation framework. Bart VR ... LORE. Application minded. refactoring candidates. link tests - code. Reduced learning curve ...
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Introduction CS 3358 Data Structures
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* The most common mistake in creating contract The most common problem in creating contracts is ... Office Theme PowerPoint Presentation PowerPoint ...
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Use-Case Model : Adding Detail with operation contracts Larman ch. 13 UP artifacts Operation contracts Part of the use-case model Analyze technique Use cases are the ...
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Design by Contract * Institute of Computer Software Nanjing University
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(better) A SalesLineItem was created. (worse) Create a SalesLineItem. Why? ... Open curtains and take a second picture. Compare the before and after pictures, ...
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This means that before modules are written a specification or contract is ... param p1 A description of this parameter @param p2 A description of this parameter ...
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Design by Contract
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method tryToSolve } // class BackTrack. The tryToSolve Method. boolean success = false; ... same class, and that class implements the // Comparable interface. ...
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Use-Case Model : Adding Detail with operation contracts Larman ch. 11 UP artifacts Operation contracts Part of the use-case model Analyze technique Use cases are the ...
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Artificial Intelligence in Game Design Advanced Planning Algorithms Planning and Preconditions Actions may have preconditions before they can be taken Multiple ...
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Artificial Intelligence in Game Design Goal-Oriented Action Planning Planning for Hierarchical Teams Goals of team should direct goals of individuals Individuals take ...
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Class invariants and class correctness ... Correctness of a class ... How to prove correctness. A complex story. 10/1/09. Design by Contract. 17. The End ...
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consequences of a client's lack of adherence to a contract; ... might be necessary that a door be unlocked before it can be opened, or that an ...
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Operation Contracts Prepared By: ... The system and it s objects are presented on a theatre stage. Before the operation, take a picture of the stage.
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Feature Interactions as Inconsistencies Luigi Logrippo luigi@uqo.ca http://w3.uqo.ca/luigi/
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COP4020 Programming Languages Introduction to Axiomatic Semantics Prof. Robert van Engelen Assertions and Preconditions Assertions are used by programmers to verify ...
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Exam Review. by. Broc Miramontes. Arion Clarke. Object Oriented Design. Candidate Classes ... Description: Calculates the overall GPA from the current transcript using ...
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