54 lines
1.2 KiB
Standard ML
Executable file
54 lines
1.2 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 2026 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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* Added: 2026-03-25
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*/
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/*
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* Iterating through maps in Fun
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*
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* This example shows common patterns to iterate over a map:
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* - for k in keys(m): access value via m[k]
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* - for v in values(m): iterate values directly
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* - Notes about non-deterministic key order unless you define one
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*/
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// Define a sample map
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user = { "name": "Ada", "age": 37, "city": "London" }
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print("-- Iterate keys, then index map --")
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for k in keys(user)
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print(k + ": " + to_string(user[k]))
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print("-- Iterate values only --")
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for v in values(user)
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print(v)
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// If you need a specific order, provide it explicitly
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order = ["name", "city", "age"]
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print("-- Deterministic order by explicit key list --")
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for k in order
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if has(user, k)
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print(k + ": " + to_string(user[k]))
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/* Expected output (key order in the first two blocks may vary):
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-- Iterate keys, then index map --
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name: Ada
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age: 37
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city: London
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-- Iterate values only --
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Ada
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37
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London
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-- Deterministic order by explicit key list --
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name: Ada
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city: London
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age: 37
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*/
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