Use default arguments

Author: k163377

README.md

@@ -443,27 +443,27 @@ data class Foo(
 
 The transformation of the argument name is also applied to the alias set by `KParameterAlias`.
 
-### Use default arguments
-`KRowMapper` supports `default arguments`.  
-`Default arguments` are available in the following situations:
+#### Use default arguments
+The `KRowMapper` allows you to use default arguments in certain situations.
 
-- When not referring to the acquisition result
-- When the acquisition result is `null`
-
-As of `KRowMapper` 0.8, it does not support the use of `default argument` when columns cannot be obtained.
-
-#### When not referring to the acquisition result
-When the `KUseDefaultArgument` `annotation` is added to the parameter,
- the `default argument` can be used forcibly without referring to the obtained result.
+##### Always use the default arguments
+If you don't want to use the value from the DB and always use the default argument, you can use the `KUseDefaultArgument` annotation.
 
 ```kotlin
-data class Dst(val fooId: Int, @param:KUseDefaultArgument val barValue: String = "default")
+class Foo(
+    ...,
+    @KUseDefaultArgument
+    val description: String = ""
+)
 ```
 
-#### When the acquisition result is null
-When `KParameterRequireNonNull` `annotation` is given to a parameter,
- the default argument can be used if the obtained result is `null`.
+##### Use default argument if the result is null
+If you want to use the default argument if the result is `null`, you can use the `KParameterRequireNonNull` annotation.
 
 ```kotlin
-data class Dst(val fooId: Int, @param:KParameterRequireNonNull val barValue: String = "default")
+class Foo(
+    ...,
+    @KParameterRequireNonNull
+    val description: String = ""
+)
 ```