Brandon Lucas
15a820a467
- Add string concatenation support to + operator in typechecker - Register ADT constructors in both type environment and interpreter - Bind handlers as values so they can be referenced in run...with - Fix effect checking to use subset instead of exact match - Add built-in effects (Console, Fail, State) to run block contexts - Suppress dead code warnings in diagnostics, modules, parser Update all example programs with: - Expected output documented in comments - Proper run...with statements to execute code Add new example programs: - behavioral.lux: pure, idempotent, deterministic, commutative functions - pipelines.lux: pipe operator demonstrations - statemachine.lux: ADT-based state machines - tailcall.lux: tail call optimization examples - traits.lux: type classes and pattern matching Add documentation: - docs/IMPLEMENTATION_PLAN.md: feature roadmap and status - docs/PERFORMANCE_AND_TRADEOFFS.md: performance analysis Add benchmarks for performance testing. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
46 lines
1.0 KiB
Plaintext
46 lines
1.0 KiB
Plaintext
// Demonstrating type classes (traits) in Lux
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//
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// Expected output:
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// RGB color: rgb(255,128,0)
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// Red color: red
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// Green color: green
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// Define a simple Printable trait
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trait Printable {
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fn format(value: Int): String
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}
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// Implement Printable
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impl Printable for Int {
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fn format(value: Int): String = "Number: " + toString(value)
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}
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// A Color type with pattern matching
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type Color =
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| Red
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| Green
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| Blue
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| RGB(Int, Int, Int)
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fn colorName(c: Color): String =
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match c {
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Red => "red",
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Green => "green",
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Blue => "blue",
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RGB(r, g, b) => "rgb(" + toString(r) + "," + toString(g) + "," + toString(b) + ")"
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}
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// Test
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let myColor = RGB(255, 128, 0)
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let redColor = Red
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let greenColor = Green
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// Print results
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fn printResults(): Unit with {Console} = {
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Console.print("RGB color: " + colorName(myColor))
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Console.print("Red color: " + colorName(redColor))
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Console.print("Green color: " + colorName(greenColor))
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}
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let output = run printResults() with {}
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