---
title: Validated Choice Lists
---
Added in Fzzy Config 0.6.0
Create sets of toggle-able choices with `ValidatedChoiceList`. This is a feature-flag-style setting, poll for active features using `List#contains`.
This validation is a `List`, where T is your choice type. Like `ValidatedList`, this implements `List`, so can be used directly for list operations.
Easily create a choice list using `toChoiceList` in `ValidatedList / Set / Choice`.
```java !!tabs Java
ValidatedChoiceList enabledFeatures = ValidatedList.ofString(
"dev_mode", "logging", "fail_fast", "compatibility_mode" //the total list of choices/features
).toChoiceList(
listOf("logging") //the enabled-by-default features
);
```
```kotlin !!tabs Kotlin
val enabledFeatures = ValidatedList.ofString(
"dev_mode", "logging", "fail_fast", "compatibility_mode" //the total list of choices/features
).toChoiceList(
listOf("logging") //the enabled-by-default features
)
```
The in-GUI popup with the available choices, each in an enabled or disabled state. Clicking on a choice flips its state.
See the documentation page here 🗗