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by throwaway81523
1543 days ago
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> That's fine from a philosophical sense, but doesn't it make consecutive reads extremely heavy? You're throwing away the efficiency of in place updates at the language level, no? You use special data structures to deal with that. There's a great book about them, "Purely Functional Data Structures", by Jeff Okasaki. You generally don't get O(1) update like for traditional arrays, but you can usually get O(log n), like you would get for a database table with B-tree indexes. |
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