It is entirely possible to ignore a parameter within a match construct. Take the following struct:
struct Test { answer: i32, real_answer: i32, score: i32, }
We can use this struct within a match construct as we can any other type. However, we want to ignore anything after real_answer. To do this, we will use the .. operator. Our match will look like this:
fn match_test(t: Test) { match t { Test {answer: Question::MyAnswer, real_answer:
Question::RealAnswer, ..} => {...} } }
We can also use _ as a parameter (we expect a value, but we don't care what it is):
fn match_test(t:Test) { match t { Test {answer: Question::MyAmswer, real_answer:
Question::RealAnswer, score:_} => {...} } }
You can appreciate that the match construct is powerful, but let's see it in action with patterns.