优化类型的定义

to_bool.go

@@ -0,0 +1,28 @@
+package convx
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// ToBool converts v to bool.
+func ToBool(v interface{}) (bool, error) {
+	switch v := v.(type) {
+	case bool:
+		return v, nil
+	case string:
+		if v, err := strconv.ParseBool(v); err == nil {
+			return v, nil
+		} else {
+			return false, err
+		}
+	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64:
+		i, err := ToInt(v)
+		if err != nil {
+			return false, err
+		}
+		return i > 0, nil
+	default:
+		return false, fmt.Errorf("unsupported type %T", v)
+	}
+}