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October 19, 2015 05:46
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package main | |
import "fmt" | |
type Rule func(int) string | |
func filter(div int, tag string) Rule { | |
return func(n int) string { | |
if n%div == 0 { | |
return tag | |
} | |
return "" | |
} | |
} | |
func apply(rules []Rule, n int) interface{} { | |
res := "" | |
for _, rule := range rules { | |
res += rule(n) | |
} | |
if len(res) > 0 { | |
return res | |
} | |
return n | |
} | |
func main() { | |
var rules = []Rule{ | |
filter(3, "Fizz"), | |
filter(5, "Buzz"), | |
filter(9, "Boom"), | |
} | |
for i := 1; i <= 45; i++ { | |
fmt.Println(apply(rules, i)) | |
} | |
} |
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Live code - http://play.golang.org/p/r3ZmRZheQl