https://github.com/jeremylikness/iqueryableexpressionexamples
Examples for the TDevConf presentation "Inside IQueryable: The Power of .NET Expressions."
https://github.com/jeremylikness/iqueryableexpressionexamples
Last synced: 2 months ago
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Examples for the TDevConf presentation "Inside IQueryable: The Power of .NET Expressions."
- Host: GitHub
- URL: https://github.com/jeremylikness/iqueryableexpressionexamples
- Owner: JeremyLikness
- License: mit
- Created: 2020-09-28T17:20:47.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2020-10-08T16:25:53.000Z (over 4 years ago)
- Last Synced: 2025-01-14T03:13:51.328Z (4 months ago)
- Language: C#
- Size: 2.09 MB
- Stars: 3
- Watchers: 4
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# IQueryable Expression Examples
Examples for the presentation _Inside IQueryable: The Power of .NET Expressions_.
[Click here for the presentation deck](./Likness-IQueryable-TDevConf.pdf).
The `.ipynb` extension is for Jupyter notebooks. To run these locally, follow the instructions
at [.NET Interactive](https://github.com/dotnet/interactive).
The notebooks demonstrate:
1. Introduction to expressions
2. Example of using expressions to construct a new type instance
3. Advanced expressions (combining multiple branches and using expression blocks)
4. Introduction to queries
The remaining projects are runnable as is.
## Constructor Performance
The `CtorPerformance` project is a benchmark showing how long it takes to create new
instances using various methods. The best way to see the results is to navigate to the project
root folder and type:
`dotnet run --configuration release`
The project should be run in Release mode.
## Blazor App
This is a sample app showing how expressions can be serialized using the
[ExpressionPowerTools](https://github.com/jeremylikness/ExpressionPowerTools) package.
Set the `.Server` project for startup to run. It will automatically generate and seed the
initial Sqlite database.
## QueryMutators
This application shows several ways to mutate queries to perform tasks such as:
- Enforce limits on the query return ("guard rails")
- Intercept predicates in the tree
- Evaluate ALL predicates against ALL values to debug why some are `true` and others are `false`
[@JeremyLikness](https://twitter.com/JeremyLikness)