Add reaktiv order calculator example - #5783
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Demonstrates reactive state management with the reaktiv library, using Signal, Computed, and Effect primitives to drive NiceGUI UI updates. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
falkoschindler
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February 16, 2026 15:57
evnchn
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Hmm. Should add some comments to group the related bindings. And we should give some more thought to Perhaps a |
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Ok, I think this is good enough for now.
Let's merge 👍🏻
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…collection Effects in reaktiv must be assigned to variables, otherwise they get garbage collected and stop working. The previous example only worked due to a bug in reaktiv that has since been fixed. Updated the example to properly store Effect instances. zauberzeug#5783, zauberzeug#4758
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…collection (#5812) ### Motivation Effects in reaktiv must be assigned to variables, otherwise they get garbage collected and stop working. The previous example only worked due to a bug in reaktiv that has since been fixed. Updated the example to properly store Effect instances. This API behavior is documented in the reaktiv docs. References: #5783, #4758 ### Implementation We need just to assign Effects to variables. ### Progress - [x] I chose a meaningful title that completes the sentence: "If applied, this PR will..." - [x] The implementation is complete. - [x] If this PR addresses a security issue, it has been coordinated via the [security advisory](https://github.com/zauberzeug/nicegui/security/advisories/new) process. - [x] Pytests have been added (or are not necessary). - [x] Documentation has been added (or is not necessary).
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Motivation
Addresses #4758 (comment)
Adds a new example demonstrating integration with the reaktiv reactive state management library. This showcases an alternative approach to state management in NiceGUI using fine-grained reactive signals.
Implementation
The example is an order calculator with:
Requires reaktiv >= 0.21.1 which fixes a diamond dependency graph bug (buiapp/reaktiv#27).
Progress