Timeline for Advanced String Calculator in C++

10 events

when toggle format	what		by	license	comment
May 13 at 10:37	comment	added	MrBean Bremen		The result is just a double. Make it an optional instance variable (`optional<double> result`), and check if it is already set in `get_result`.
May 13 at 10:10	comment	added	JimmyHu		> Also, by "lazy calculation" I didn't mean to calculate the result each time it is accessed, but just once and cache the result. How can I cache the result and make the calculation just once?
May 13 at 6:47	history	edited	JimmyHu	CC BY-SA 4.0	Update contents
May 11 at 14:44	history	edited	MrBean Bremen	CC BY-SA 4.0	deleted 18 characters in body
May 11 at 14:07	vote	accept	JimmyHu
May 10 at 18:24	comment	added	MrBean Bremen		I put more explanations into the answer.
May 10 at 18:24	history	edited	MrBean Bremen	CC BY-SA 4.0	More explanation
May 10 at 15:14	history	edited	MrBean Bremen	CC BY-SA 4.0	Answer to comment
May 10 at 14:51	comment	added	JimmyHu		Thank you for answering. > These same `if` constructs also have the same redundant code (`reduce_operators(index)`), which can be factored out. This is not true, `reduce_operators(index)` should be placed after the computation and before the early `return` clause.
May 9 at 19:56	history	answered	MrBean Bremen	CC BY-SA 4.0