Error handling - Go programming language tutorial (28)
Errors in Go language can be classified into two types.
The first type is the irrecoverable error, which stops the code from running further, even if there is still some code after the line that generates an error. When the code cannot execute further, error messages will come out.
The second type is the recoverable error. Go language has a number of ways to recover the program from errors. We can create an error by using the New() function provided by the "errors" package. Another way of creating errors is using Errorf() method to format the error message. We can make our custom errors by implementing the Error() method of built-in error interface.
We can wrap an error to include more information about the error contextually. We can also unwrap an error to get back the wrapped error.
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