68 lines
1.4 KiB
Standard ML
Executable file
68 lines
1.4 KiB
Standard ML
Executable file
#!/usr/bin/env fun
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/*
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* This file is part of the Fun programming language.
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* https://fun-lang.xyz/
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*
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* Copyright 2025 Johannes Findeisen <you@hanez.org>
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* Licensed under the terms of the Apache-2.0 license.
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* https://opensource.org/license/apache-2-0
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*/
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// Byte + for-loop demonstration
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print("=== byte with hex literal and clamping ===")
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byte b = 0x1223 // 0x1223 -> 0x23 after 8-bit clamp
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print(b) // -> 35
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b = 0xFF
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print(b) // -> 255
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b = 0x1FF // 0x1FF -> 0xFF after clamp
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print(b) // -> 255
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print("")
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print("=== for-loop reassigning a byte variable (shows clamping near the top end) ===")
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byte acc = 0
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for i in range(250, 260)
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acc = i // will clamp at 255
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print(acc)
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print("")
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print("=== dynamic vs typed ===")
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x = 0xAB
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print(typeof(x)) // -> "Number"
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x = "now string" // dynamic variable can change type
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print(typeof(x)) // -> "String"
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// Typed byte must remain numeric (uint8):
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// b = "oops" // Uncomment to see a runtime type error
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/* Expected output:
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=== byte with hex literal and clamping ===
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OverflowError: value out of range for uint8
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*/
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/* Expected output (OLD):
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=== byte with hex literal and clamping ===
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255
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255
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255
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=== for-loop reassigning a byte variable (shows clamping near the top end) ===
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250
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251
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252
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253
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254
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255
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255
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255
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255
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255
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=== dynamic vs typed ===
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Number
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String
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*/
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