Welcome to tutorial no. 30 in Golang tutorial series. What are errors? Errors indicate any abnormal condition occurring in the program. Let’s say we are trying to open a file and the file does not exist in the file system. This is an abnormal condition and it’s represented as an error. Errors in Go are plain old values. Just like any other built-in type such as int, float64, … error values can be stored in variables, passed as parameters to functions, returned from functions, and so on.
