Crate calc_lib

This crate contains logic for an application to parse and evaluate basic rational number arithmetic using standard operator precedence and associativity.

Modules

• cache
  Fixed-sized cache that automatically overwrites the oldest data when a new item is added and the cache is full. One can think of Cache as a very limited but more performant VecDeque that only adds new data or reads old data.

Structs

• Evaluator
  Evaluates the supplied input.
• PrevVal
  A value from a previous expression that is to be displayed potentially in decimal form.

Enums

• E
  The error that is returned when attempting to evaluate the input.
• O
  A successful evaluation of an input.