79 lines
1.9 KiB
Standard ML
Executable file
79 lines
1.9 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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print("=== Dynamic (untyped) ===")
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x = 123
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print(typeof(x)) // -> "Number"
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x = "ok"
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print(typeof(x)) // -> "String"
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print("")
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print("=== Numbers and integer subtypes ===")
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number n = 42
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print(typeof(n)) // -> "Number"
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print(n) // -> 42
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int8 s8 = 130 // clamps to 127
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print(s8) // -> 127
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uint16 u16 = 70000 // clamps to 65535
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print(u16) // -> 65535
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byte b = 0xFF // 255
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print(b) // -> 255
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boolean flag = 2 // clamps to 1
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print(flag) // -> 1
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print("")
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print("=== Strings ===")
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string s = "hello"
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print(typeof(s)) // -> "String"
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print(s) // -> "hello"
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print("")
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print("=== Nil ===")
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nil nn = nil
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print(typeof(nn)) // -> "Nil"
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print(nn) // -> nil
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print("")
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print("=== Arrays ===")
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arr = [1, 2, 3]
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print(typeof(arr)) // -> "Array"
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print(len(arr)) // -> 3
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print(arr[1]) // -> 2
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print(arr[0:2]) // -> [1, 2]
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print("")
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print("=== Maps ===")
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m = { "k": "v", "n": 1 }
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print(typeof(m)) // -> "Map"
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print(m["k"]) // -> "v"
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print("")
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print("=== Functions ===")
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fun add(a, b)
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return a + b
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print(typeof(add)) // -> "Function"
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print(add(5, 7)) // -> 12
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print("")
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print("=== Classes and Class-typed variables ===")
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class Person(number age, string name)
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// methods must declare 'this' as first parameter
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fun toString(this)
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// typeof(instance) will call this and return it
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return "Class"
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Class p = Person(33, "Jo")
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print(typeof(p)) // -> "Class"
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// p = "nope" // Uncomment to see TypeError: expected Class
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print("")
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print("=== Done ===")
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