Prompt Declaration Language is a declarative prompt programming lang
...Programming frameworks do not enforce or validate such structures since they are not specified in a machine-consumable way. The purpose of the Prompt Declaration Language (PDL) is to allow developers to specify the structure of prompts and to enforce it, while providing a unified programming framework for composing LLMs with rule-based systems.
Statistics modules in Perl Data Language, with a quick-start guide for non-PDL people. They make the PDL shell work like R, but with PDL threading (fast automatic iteration) of procedures including t-test, linear regression, and k-means clustering.
A static analyzer for Java programs that checks for design guidelines. The project is adopted from PDL (http://portal.acm.org/citation.cfm?id=1218571).