The Complete Rust Programming Reference Guide

Other people's code

Consequently, every algorithm must have a "number of steps required" and "bytes of memory required" property, right? Close: since they are ever-changing variables, a universal way of describing what other people have achieved is necessary.

Typically, programmers instinctively know how to do that: "is this thing really doing everything twice?!" should be a familiar outcry. What has been said here? Assuming it's a function that has an input parameter x, it sounds like the function is doing something with x twice. Mathematically speaking, this would be expressed as f(x) = 2x.

What this is really saying is that for every input, the required number of steps to fully execute the function is twice the input—isn't this exactly ...