Hi, I've goggled for the reason to write fast and slow software and I found most recommended dealing with memory efficiently and master usage of operators. So I would like to learn it. The reason is to have a solid understanding so when I write code I do not want to use a lot of memory and have an efficient software. i.e. Everything software from voidtools is a very small software but amazing search tool and there are too many others. So am I right to learn this 1st to achieve that target or I am wrong? What titles of the books I may search for?