x/clean-go-article
1
0
Fork 0
mirror of https://github.com/Pungyeon/clean-go-article.git synced 2024-09-19 22:34:04 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Update README.md

Browse source 
Co-Authored-By: Aleksandr Hovhannisyan <aleksandrhovhannisyan@gmail.com>
This commit is contained in:
Lasse Martin Jakobsen 2019-07-28 09:15:58 +02:00 committed by GitHub
parent 6bcff141fd
commit eab8c21f28
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
README.md
View file

@ -1188,7 +1188,7 @@ As mentioned before, the above code will compile. The `NewNullWriter` returns a
> panic: runtime error: invalid memory address or nil pointer dereference
What happened? An interface method in Go is essentially a function pointer. In this case, since we are pointing to the function of an interface, rather than an actual method implementation, we are trying to invoke a function that's actually a `nil` pointer. To avoid this from happening, we would have to provide the `NulllWriter` with a struct which fulfills the interface contract, with actual implemented methods.
What happened? An interface method in Go is essentially a function pointer. In this case, since we are pointing to the function of an interface, rather than an actual method implementation, we are trying to invoke a function that's actually a `nil` pointer. To prevent this from happening, we would have to provide the `NulllWriter` with a struct that fulfills the interface contract, with actual implemented methods.
```go
func main() {