lil command line math utility - purpose of this project is to..

• learn test driven development principles (TDD)
• write a command line utility that has 100% coverage
• set up a CD/CI pipeline that uses testing before adding new featues

interesting finds along the way

turns out, parsing an expression is not a trivial problem. the first thing i stumbled across was the shunting yard algorithm, invented by dijkstra. this will be the first implementation. also found this article interesting (adding it here to read it later: http://www.engr.mun.ca/~theo/Misc/exp_parsing.htm). it proposes parsing via recursive descent and he derives a technique known as precedence climbing

shunting yard algorithm