FNV hash

.gitignore

@@ -34,3 +34,4 @@ upper-words/upper-words
 longest-word/longest-word
 statecsv/statecsv
 go-financial/go-financial
+my-fnv/my-fnv

my-fnv/main.go

@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+import "hash/fnv"
+import "io"
+import "log"
+import "os"
+
+func main() {
+	if len(os.Args) < 2 {
+		log.Fatalln("Usage my-fmv file")
+	}
+	f, err := os.Open(os.Args[1])
+	if err != nil {
+		log.Fatalln(err)
+	}
+	defer f.Close()
+
+	h := fnv.New64()
+
+	io.Copy(h, f)
+	fmt.Printf("%x\n", h.Sum64())
+}