15 lines
320 B
Plaintext
15 lines
320 B
Plaintext
-- at (indexer) function, for lists and strings
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-- out of values (hey, this isn't the Circus of Values!)
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at([], _) -> -1.
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at("", _) -> -1.
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-- we've hit our target item
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at(x::_, 0) -> x.
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-- we've got more to go, keep iterating
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at(x::xs, i) -> at(xs, i-1).
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-- test
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print(at([1, 2, 3, 4], 2)).
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print(at("hi there", 1)). |