Programming

There are various ways to know about the release of your favourite new software, follow the mailing list, check the Github release page periodically, follow the project’s Twitter handle, etc. But do you know there is even more reliable way to track the releases of your favourite software released on Github. Github Releases and RSS feeds For every repository on Github, if the project is posting their releases, you can follow the RSS feed of that project’s release. The RSS feed link for any project’s release is: ...

Test Fixtures “go test” sets pwd as package directory Test Helpers should never return an error they should access to the *testing.T object call t.Helper() in the beginning (works only for go1.9+) for things reqiuiring clean up return closures Configurability Unconfigurable behavior is often a point of difficulty for tests. e.g. ports, timeouts, paths. Over-parameterize structs to allow tests to fine-tune their behavior It’s ok to make these configs unexported so only tests can set them. Slides Video GopherCon 2017: Mitchell Hashimoto - Advanced Testing with Go by Mitchell Hashimoto

Pointer receiver For a struct User with a method Work with pointer receiver. type User struct { Name string Period int } func (u *User) Work() { fmt.Println(u.Name, "has worked for", u.Period, "hrs.") } func main() { uval := User{"UserVal", 5} uval.Work() pval := &User{"UserPtr", 6} pval.Work() } See on go playground. output: UserVal has worked for 5 hrs. UserPtr has worked for 6 hrs. If we call this method on value type object uval it works, and obviously it works with pointer type object pval. Value receiver Now we change the method receiver from pointer to value. ...