Brandon Lucas
52ad5f8781
Add Random and Time effects for random number generation and time-based operations. These effects can be used in any effectful code block. Random effect operations: - Random.int(min, max) - random integer in range [min, max] - Random.float() - random float in range [0.0, 1.0) - Random.bool() - random boolean Time effect operations: - Time.now() - current Unix timestamp in milliseconds - Time.sleep(ms) - sleep for specified milliseconds Changes: - Add rand crate dependency - Add Random and Time effect definitions to types.rs - Add effects to built-in effects list in typechecker - Implement effect handlers in interpreter - Add 4 new tests for Random and Time effects - Add examples/random.lux demonstrating usage Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
42 lines
1.0 KiB
Plaintext
42 lines
1.0 KiB
Plaintext
// Demonstrating Random and Time effects in Lux
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//
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// Expected output (values will vary):
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// Rolling dice...
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// Die 1: <random 1-6>
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// Die 2: <random 1-6>
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// Die 3: <random 1-6>
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// Coin flip: <true/false>
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// Random float: <0.0-1.0>
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// Current time: <timestamp>
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// Roll a single die (1-6)
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fn rollDie(): Int with {Random} = Random.int(1, 6)
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// Roll multiple dice and print results
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fn rollDice(count: Int): Unit with {Random, Console} = {
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if count > 0 then {
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let value = rollDie()
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Console.print("Die " + toString(4 - count) + ": " + toString(value))
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rollDice(count - 1)
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} else {
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()
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}
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}
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// Main function demonstrating random effects
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fn main(): Unit with {Random, Console, Time} = {
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Console.print("Rolling dice...")
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rollDice(3)
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let coin = Random.bool()
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Console.print("Coin flip: " + toString(coin))
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let f = Random.float()
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Console.print("Random float: " + toString(f))
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let now = Time.now()
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Console.print("Current time: " + toString(now))
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}
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let output = run main() with {}
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