Name: How values make systems simpler
Start: 2024-09-25T19:00:00+01:00
End: 2024-09-25T21:00:00+01:00

Distinguishing between stateful **Objects** and **Values** has long been recognized as fruitful. Values are universal context-free abstractions that prevent side-effects and allow for a functional programming style. Though programming languages provide simple **Values** like Integer and String, more complex Values are usually not supported. We show how to model complex structures as Values in Smalltalk, which allows for a simple and versatile implementation. The resulting Smalltalk systems are simple, clear and easily testable.

**[Christian Haider](https://christianhaider.de/index_en.html)** is the author of the **[PDFtalk](https://pdftalk.de/doku.php)** library used in **[smallCharts](https://smallcharts.de/english/)** and other projects. Underlying is a simple implementation of **[Values](https://pdftalk.de/doku.php?id=complexvalues)** which he uses extensibly.

**Christian** will show how Values make systems simpler and easier. Examples for some uses and the limits of the approach will be discussed.
Since Values use only standard Smalltalk features, it can be used in most other Smalltalks. *And all of this code is available with **MIT licence.***

Zoom Meeting ID = 895 9819 6284
Zoom Passcode = 417966

Giovanni Corriga

Tim Mackinnon

Francisco Garau

UK Smalltalk User Group

Technology

Open Source

Software Development

Programming Languages

Object Oriented Programming

Test Driven Development

Agile Project Management

Computer Programming

How values make systems simpler

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How values make systems simpler

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