A modern programming language that makes developers happier.

kotlinlang

Is this normal to set a nullable properties in Entity and Model class? Should we use non null "val" instead?
```data class DataInputEntity(
    @PrimaryKey(autoGenerate = true)
    @ColumnInfo(name = "id") val id: Int,
    @ColumnInfo(name = "weight") var weight: Float? = null,
    @ColumnInfo(name = "body_fat") val bodyFat: Float? = null,
    @ColumnInfo(name = "stamp") val stamp: String,
    @ColumnInfo(name = "note") val note: String,
    @ColumnInfo(name = "date") val date: Long,
    @ColumnInfo(name = "unit") val weightUnit: Int = TypeUnitWeight.KG.value
)```


Nullability will just depend on how you want to model your data.
Regardless, I would suggest always having all properties as `val` and use the `copy` function to perform changes.

Depends on how much you trust your API. If you require nullables, it would be better to make them `val` and convert your network entity into a non-nullable entity for the other layers of your app, preferably with some checks during conversion.