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This text explores advanced concepts in data structure operations, focusing on key-value pairs. It delves into modulo operations, binary tree indexing, and odd-bit processing. The discussion includes efficient algorithms for retrieving values based on specific conditions using lambda functions. By breaking down these operations, we aim to enhance understanding of how data is structured and accessed, emphasizing the importance of modular arithmetic and tree-based indexing in programming. Ideal for developers looking to deepen their knowledge of foundational data handling techniques.
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key1 value1 key2 value2 key3 value3 key4 value4 key5 value5 key6 value6 key7 value7 1 key1 key8 value8 2 key3 key9 value9 3 key5 key10 value10 3 key7 key11 value11 4 key9 key12 value12 4 key11 key13 value13 4 key13 key14 value14 4 key15 key15 value15 Index: mod5 * 2 Primary BTree 10 key5 20 key10 30 key15 :key-form ‘(lambda (k v) (if (= 0 (mod (val v) 5) (values t (* 2 (val v))) (values nil nil))) Index: odd/bits :key-form ‘(lambda (k v) (if (oddp (val v)) (values t (log (val v) 2)) (values nil nil)))