Feature/example test (#24)

example docs

strUtil/str_to_uint_x_example_test.go

@@ -0,0 +1,53 @@
+package strUtil
+
+import "fmt"
+
+func ExampleStrToUint() {
+	s := "200"
+	res := StrToUint(s)
+
+	fmt.Printf("%d,%T\n", res, res)
+
+	// Output:
+	// 200,uint
+}
+
+func ExampleStrToUint8() {
+	s := "200"
+	res := StrToUint8(s)
+
+	fmt.Printf("%d,%T\n", res, res)
+
+	// Output:
+	// 200,uint8
+}
+
+func ExampleStrToUint16() {
+	s := "200"
+	res := StrToUint16(s)
+
+	fmt.Printf("%d,%T\n", res, res)
+
+	// Output:
+	// 200,uint16
+}
+
+func ExampleStrToUint32() {
+	s := "200"
+	res := StrToUint32(s)
+
+	fmt.Printf("%d,%T\n", res, res)
+
+	// Output:
+	// 200,uint32
+}
+
+func ExampleStrToUint64() {
+	s := "200"
+	res := StrToUint64(s)
+
+	fmt.Printf("%d,%T\n", res, res)
+
+	// Output:
+	// 200,uint64
+}