> # op class. instances include minus and plus. > # each one links to the other.
# expression class. i suppose an op is an expression [making graph-tree] # can i suppose make equals be an op too, maybe give it solve member, who knows > # then ... we apply ops to expressions, trying to isolate something to solve > for # so big challenge is solve function, which isn't that complicated given there's only minus, plus, and equals! # we'll need constant and variable nodes too # - minus # - plus # - equal # - constant # - variable # solve function # maybe we can do the core behavior of looking up the inverse of an op and applying it to both sides of an equation
