Custom class as key | unordered map

Question

Hi

Can someone suggest whats the error in code below:

https://code.sololearn.com/c74pGRbpO1e8/?ref=app

Answer 1

line 20, the '&' is at the wrong location. Should be after the type test, not after the const (since you are using west side notation). Like this:

size_t operator()(const test& t1)const

fixes the code

Answer 2

Thanks