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Astream nextputall - PowerPoint PPT Presentation

Smalltalk Control Structures

Smalltalk Control Structures. Object Boolean True one instance - true False one instance - false. Boolean operations. ifTrue: trueBlock ifFalse: falseBlock ifTrue: trueBlock ifFalse: falseBlock & aBoolean | aBoolean. Using Standard Control Structures.

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545 views • 46 slides

Elements of Design - Unit of Reuse

Elements of Design - Unit of Reuse. Methods are Units of Reuse. Dynamic binding + methods = reuse in subclasses. Methods are Unit of Reuse. Example: Forced to Duplicate!. Node>>computeRatioForDisplay | averageRatio defaultNodeSize | averageRatio := 55.

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376 views • 21 slides

Elements of Design - Unit of Reuse

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237 views • 21 slides

Streams

Streams. Allows the traversal of a collection Associated with a collection If the collection is a Smalltalk collection: InternalStream If the collection is a file or an object that behaves like a collection: ExternalStream Stores the current position Stream (abstract)

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337 views • 9 slides

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Astream nextputall - PowerPoint PPT Presentation

Smalltalk Control Structures

Elements of Design - Unit of Reuse

Elements of Design - Unit of Reuse

Streams