moja
OneOf
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moja
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Sketch of a Post-ORM
I want sum types.
I want a statically-typed way of constructing composable queries that follow SQL rather than reinvent a different thing. It doesn't have to be the same syntax but it has to be the same structuring.
I started writing one[0] and stopped before doing all the boilerplate code generation, having moved on from the JVM ecosystem for the time being. One thing it does is treat most things like sets so we don't end up with N+1 queries. Another trick it uses is collapsing constant expressions via an expression evaluation library[1].
[0] https://github.com/karmakaze/safeql
[1] https://github.com/karmakaze/moja
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Ask HN: Tools you have built for yourself?
Over the years, I've written many apps and utilities for myself or others (that didn't end up get used). These are the interesting ones I remember. Many not quite complete/usable. Other than hackerer.news none of them are 'up' and running. Some have and others haven't been published as opensource.
- https://hackerer.news HN viewer (source[0]): I use daily so I can see today's top stories in reverse chronological order with mainstream topics sorted to the bottom.
- qwickly[1] keyboard layout: I use all the time as an easier to learn and more comfortable to type than Colemak/Tarmak
- safeql[2]: Java type-safe SQL expression composer that reduces constant expressions and eliminates N+1 queries loading associations by always operating on set relation or array of models.
- moja[3]: Composable computation pipelines for Java: Async, Lazy, Option, Try, Result, Multi (List), Stated, Reader, Logger, Writer.
- gitgrep.com[4] Opensource SaaS version of etsy/houndd (now called hound-search).
- statuspages.me: Status page aggregator with dynamic javascript for scraping each source using selector expressions.
- movies to watch aggregator: with links to sources to watch. It was hard then to get 3rd party deep links into streaming sites so included some torrent links. Got a DMCA phone call, so took it down. Combined thumbnails, summaries, actors(?), imdb ratings, links.
- java2cpp: Translate a moderately sized java app with test suite to c++, not 100% required final manual fixups.
- swift2java (or maybe it was java2swift, it's fuzzy now): translate Swift to Java obviously, using ANTLR4. Not 100% required final manual fixups.
- gui2log: to make an ASCII rendition of on-screen GUI widgets into an application log file when form submitted, so users couldn't complain that they saw X, but got Y.
- some basic stats/ML algorithms: k-nearest neighbour, RNN back-propagation, etc?
- Java in-memory DB: Small SQL-like memory tables with indexing/searching.
- wwwsqldesigner: This exists as opensource and I extended it to infer foreign key relationships based on naming conventions used in a MySQL schema. It was great for zooming around a large ERD.
- tracelog: combination of microservices parent/child span logging and generated high level events shown as a sequence diagram. Integrated with Loggly for full/verbose logs of selected high-level events.
- pcl2bmp downscaler: Reduce high resolution HP LaserJet (PCL5) printed to file to lower resolution bitmap pages for screen display (before retina DPI was common). It aimed to shrink same-color areas and preserve black/white transitions while reducing.
[0] https://gitlab.com/karmakaze/hackerer-news
[1] https://github.com/qwickly-org/Qwickly
[2] https://github.com/karmakaze/safeql
[3] https://github.com/karmakaze/moja
[4] https://github.com/gitgrep-com/gitgrep
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Ask HN: What is the most impactful thing you've ever built?
Sure, SafeQL[0] SQL library. It's been sitting in a close but not enough to promote state for a while. The main thing I wanted was to have generation of the bindings to existing DB schema. I also want to combine using Moja[1] datatypes for uniform handling of single/multi, normal/async, and errors.
[0] https://github.com/karmakaze/safeql
[1] https://github.com/karmakaze/moja
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C# 11 Features Now Previewing in Visual Studio: Generic Attributes and More
I made a similar thing for Java moja Options as needed other projects. It sort-of works but it's not great.
OneOf
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The Monad Invasion - Part 1: What's a Monad?
OneOf
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Discriminated Unions: Essa feature faz falta no CSharp
Inclusive, para suportar esse tipo de funcionalidade, foi criada a biblioteca OneOf: mcintyre321/OneOf: Easy to use F#-like ~discriminated~ unions for C# with exhaustive compile time matching (github.com)
- Easy to use F#-like ~discriminated~ unions for C# with big compile time matching
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Rolled my own Result<T,E> type that seems to work better than others.
Then I found discussion of the OneOf package, and then found some simpler Result code. I tried using that code but I found the use of Match and lambdas meant I couldn't simply break out of the loop in my example.
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What's new in C# 12: overview
Until that feature lands there's this https://github.com/mcintyre321/OneOf which is pretty nice.
- The combined power of F# and C#
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Exception handling between controller and service
Yep, it's called result pattern, aforementioned above. There was two highlighted implementations - OneOf, FluentResults.
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Have you heard of AnyOf .NET Lib?
No he didn't. He made a video of the OneOf library. Not this one.
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Have you heard of AnyOf C# Library?
We already have OneOf https://github.com/mcintyre321/OneOf I've used it in Production multiple times and it's an awesome way to keep everything strongly typed and eliminate null reference exceptions.
- What your hidden nuget gems ?
What are some alternatives?
gitgrep - Lightning fast code searching made easy
language-ext - C# functional language extensions - a base class library for functional programming
safeql - Composable / async / functional / type-safe / parallel-pipelined queries and relations without SQL injection or N+1s.
csharp-monad - Library of monads for C#
Norm - The SQL generation library you already know how to use.
ValueOf - Deal with Primitive Obsession - define ValueObjects in a single line (of C#).
openship - multi-channel fulfillment at scale
csharplang - The official repo for the design of the C# programming language
Rop.OneOfExtensionGenerator - OneOf Helper Extensions Source Generator
TensorFlowSharp - TensorFlow API for .NET languages
BinderTool - Dark Souls II / Dark Souls III / Bloodborne bdt, bhd, bnd, dcx, tpf, fmg and param unpacking tool
.NET Runtime - .NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.