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amt's Introduction

AMT - Fast integer trie map

This is based on Phil Bagwell's Array Mapped Tree from "Fast And Space Efficient Trie Searches"

It supports unsigned integer keys (32, 64 or 128 bits) and has been specially optimised for the case where keys are somewhat monotonic.

Overview

  • Header only: the file amt.h is all you need

  • ordered container

  • very fast - performance similar to hash table

  • mostly same interface as std::map. However the value_type has both the key and the value const.

  • low memory usage

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