add example

example/go.mod

@@ -0,0 +1,5 @@
+module esin.io/finlab/demo
+
+go 1.15
+
+require esin.io/finlab/snowflake v0.0.0-20201227082138-bb688a618b0e // indirect

example/go.sum

@@ -0,0 +1,2 @@
+esin.io/finlab/snowflake v0.0.0-20201227082138-bb688a618b0e h1:/FUv+dmC0G1+ftZdT8r4Vg5ZV2Udx9BFdkDRNG+V8K0=
+esin.io/finlab/snowflake v0.0.0-20201227082138-bb688a618b0e/go.mod h1:lFosyt/rdezHRPTLulKiH1MwfSCwaPD40ZcdSBKzy/4=

example/main.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+
+	"esin.io/finlab/snowflake"
+)
+
+func main() {
+
+	// Create a new Node with a Node number of 1
+	node, err := snowflake.NewNode(1)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	// Generate a snowflake ID.
+	id := node.Generate()
+
+	// Print out the ID in a few different ways.
+	fmt.Printf("Int64  ID: %d\n", id)
+	fmt.Printf("String ID: %s\n", id)
+	fmt.Printf("Base2  ID: %s\n", id.Base2())
+	fmt.Printf("Base64 ID: %s\n", id.Base64())
+
+	// Print out the ID's timestamp
+	fmt.Printf("ID Time  : %d\n", id.Time())
+
+	// Print out the ID's node number
+	fmt.Printf("ID Node  : %d\n", id.Node())
+
+	// Print out the ID's sequence number
+	fmt.Printf("ID Step  : %d\n", id.Step())
+
+	// Generate and print, all in one.
+	fmt.Printf("ID       : %d\n", node.Generate().Int64())
+}