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Diffstat (limited to 'blog/go-interfaces-considered-harmful-2018-12-03.markdown')
| -rw-r--r-- | blog/go-interfaces-considered-harmful-2018-12-03.markdown | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/blog/go-interfaces-considered-harmful-2018-12-03.markdown b/blog/go-interfaces-considered-harmful-2018-12-03.markdown index 387046b..d2e7ecb 100644 --- a/blog/go-interfaces-considered-harmful-2018-12-03.markdown +++ b/blog/go-interfaces-considered-harmful-2018-12-03.markdown @@ -110,3 +110,22 @@ All of the men spoke fact about the thing, but none of them spoke the truth of w // after grope switch block log.Printf("%T", thing) // prints Elephant ``` + +--- + +``` + switch thing.(type) { + case Trunker: + log.Printf("man %d: this thing is like a thick snake", id) + case Fanner: + log.Printf("man %d: this thing is like a kind of fan", id) + case TreeTrunker: + log.Printf("man %d: this thing is like a tree trunk", id) + case Waller: + log.Printf("man %d: this thing is like a wall", id) + case Roper: + log.Printf("man %d: this thing is like a rope", id) + case Tusker: + log.Printf("man %d: this thing is hard, smooth and like a spear", id) + } +``` |