This may simply be a special case of cast using a dictionary type

Reporter: Wes McKinney / @wesm

Related issues:

• [C++] C++ array kernels framework and execution buildout (umbrella issue) (is a child of)
• [C++][Python] Allow to specify a dictionary type for dictionary_encode() function (relates to)
• [C++] Add function to "conform" a dictionary array to a target new dictionary (is related to)

_{Note: This issue was originally created as ARROW-1574. Please see the migration documentation for further details.}