Tutorial by Examples

Note: in the subsequent passages, the terms hash map and hash table are used interchangeably and refer to the same concept, namely, a data structure providing efficient key lookup through use of an internal hash function. Introduction Although R does not provide a native hash table structure, simi...

The hash package offers a hash structure in R. However, it terms of timing for both inserts and reads it compares unfavorably to using environments as a hash. This documentation simply acknowledges its existence and provides sample timing code below for the above stated reasons. There is no ident...

Although package:listenv implements a list-like interface to environments, its performance relative to environments for hash-like purposes is poor on hash retrieval. However, if the indexes are numeric, it can be quite fast on retrieval. However, they have other advantages, e.g. compatibility with ...