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11 lines
302 B
Python
11 lines
302 B
Python
IntList = Class NoneType or { .node = Int; .next = IntList }
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IntList.
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null = IntList None
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insert self, node = IntList { .node; .next = self }
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fst self =
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match self::base:
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{ node; next = _ } => node
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None => None
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l = IntList.null.insert 1
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assert l.fst() == 1
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