# ScriptableSingleton<T>

> Generic class for storing Editor state.

## Definition

* **Type:** Class
* **Namespace:** [UnityEditor](/engine/6000.0/script-reference/unityeditor.md)
* **Assembly:** UnityEditor
* **Inherits from:** [ScriptableObject](/engine/6000.0/script-reference/unityengine/scriptableobject.md)

```csharp
public class ScriptableSingleton<T> : ScriptableObject where T : ScriptableObject
```

## Remarks

The ScriptableSingleton generic class allows you to create 'Manager' type classes in the Unity Editor. In classes that derive from ScriptableSingleton, serializable data you add survives assembly reloading in the Editor. Also, if the class uses the [FilePathAttribute](/engine/6000.0/script-reference/unityeditor/filepathattribute.md), the serializable data persists between sessions of Unity.

## Examples

```csharp
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

[FilePath("SomeSubFolder/StateFile.foo", FilePathAttribute.Location.PreferencesFolder)]
public class MySingleton : ScriptableSingleton<MySingleton>
{
    [SerializeField]
    float m_Number = 42;

    [SerializeField]
    List<string> m_Strings = new List<string>();

    public void Modify()
    {
        m_Number *= 2;
        m_Strings.Add("Foo" + m_Number);

        Save(true);
        Debug.Log("Saved to: " + GetFilePath());
    }

    public void Log()
    {
        Debug.Log("MySingleton state: " + JsonUtility.ToJson(this, true));
    }
}


static class MySingletonMenuItems
{
    [MenuItem("SingletonTest/Log")]
    static void LogMySingletonState()
    {
        MySingleton.instance.Log();
    }

    [MenuItem("SingletonTest/Modify")]
    static void ModifyMySingletonState()
    {
        MySingleton.instance.Modify();
    }
}
```

## Static Properties

| Property                                                                                 | Description                                                                                                                                                                                                                                                                              |
| ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [instance](/engine/6000.0/script-reference/unityeditor/scriptablesingleton1/instance.md) | Gets the instance of the Singleton. Unity creates the Singleton instance when this property is accessed for the first time. If you use the [FilePathAttribute](/engine/6000.0/script-reference/unityeditor/filepathattribute.md), then Unity loads the data on the first access as well. |

## Methods

| Method                                                                           | Description                                         |
| -------------------------------------------------------------------------------- | --------------------------------------------------- |
| [Save](/engine/6000.0/script-reference/unityeditor/scriptablesingleton1/save.md) | Saves the current state of the ScriptableSingleton. |

## Static Methods

| Method                                                                                         | Description                                                   |
| ---------------------------------------------------------------------------------------------- | ------------------------------------------------------------- |
| [GetFilePath](/engine/6000.0/script-reference/unityeditor/scriptablesingleton1/getfilepath.md) | Get the file path where this ScriptableSingleton is saved to. |

## Inheritance

**Inherited Members:**

* [ScriptableObject.CreateInstance(string)](/engine/6000.0/script-reference/unityengine/scriptableobject/createinstance.md#createinstance\(string\))
* [ScriptableObject.CreateInstance(Type)](/engine/6000.0/script-reference/unityengine/scriptableobject/createinstance.md#createinstance\(type\))
* [ScriptableObject.CreateInstance\<T>()](/engine/6000.0/script-reference/unityengine/scriptableobject/createinstance.md)
* [Object.GetInstanceID()](/engine/6000.0/script-reference/unityengine/object/getinstanceid.md)
* [Object.GetHashCode()](/engine/6000.0/script-reference/unityengine/object/gethashcode.md)
* [Object.InstantiateAsync\<T>(T)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, Transform)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, Vector3, Quaternion)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, Transform, Vector3, Quaternion)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, Transform)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, Vector3, Quaternion)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, ReadOnlySpan\<Vector3>, ReadOnlySpan\<Quaternion>)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, Transform, Vector3, Quaternion)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, Transform, Vector3, Quaternion, CancellationToken)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, Transform, ReadOnlySpan\<Vector3>, ReadOnlySpan\<Quaternion>)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, Transform, ReadOnlySpan\<Vector3>, ReadOnlySpan\<Quaternion>, CancellationToken)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, InstantiateParameters, CancellationToken)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, InstantiateParameters, CancellationToken)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, Vector3, Quaternion, InstantiateParameters, CancellationToken)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, Vector3, Quaternion, InstantiateParameters, CancellationToken)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.InstantiateAsync\<T>(T, int, ReadOnlySpan\<Vector3>, ReadOnlySpan\<Quaternion>, InstantiateParameters, CancellationToken)](/engine/6000.0/script-reference/unityengine/object/instantiateasync.md)
* [Object.Instantiate(Object, Vector3, Quaternion)](/engine/6000.0/script-reference/unityengine/object/instantiate.md#instantiate\(object-vector3-quaternion\))
* [Object.Instantiate(Object, Vector3, Quaternion, Transform)](/engine/6000.0/script-reference/unityengine/object/instantiate.md#instantiate\(object-vector3-quaternion-transform\))
* [Object.Instantiate(Object)](/engine/6000.0/script-reference/unityengine/object/instantiate.md#instantiate\(object\))
* [Object.Instantiate(Object, Scene)](/engine/6000.0/script-reference/unityengine/object/instantiate.md#instantiate\(object-scene\))
* [Object.Instantiate\<T>(T, InstantiateParameters)](/engine/6000.0/script-reference/unityengine/object/instantiate.md)
* [Object.Instantiate\<T>(T, Vector3, Quaternion, InstantiateParameters)](/engine/6000.0/script-reference/unityengine/object/instantiate.md)
* [Object.Instantiate(Object, Transform)](/engine/6000.0/script-reference/unityengine/object/instantiate.md#instantiate\(object-transform\))
* [Object.Instantiate(Object, Transform, bool)](/engine/6000.0/script-reference/unityengine/object/instantiate.md#instantiate\(object-transform-bool\))
* [Object.Instantiate\<T>(T)](/engine/6000.0/script-reference/unityengine/object/instantiate.md)
* [Object.Instantiate\<T>(T, Vector3, Quaternion)](/engine/6000.0/script-reference/unityengine/object/instantiate.md)
* [Object.Instantiate\<T>(T, Vector3, Quaternion, Transform)](/engine/6000.0/script-reference/unityengine/object/instantiate.md)
* [Object.Instantiate\<T>(T, Transform)](/engine/6000.0/script-reference/unityengine/object/instantiate.md)
* [Object.Instantiate\<T>(T, Transform, bool)](/engine/6000.0/script-reference/unityengine/object/instantiate.md)
* [Object.Destroy(Object, float)](/engine/6000.0/script-reference/unityengine/object/destroy.md)
* [Object.DestroyImmediate(Object, bool)](/engine/6000.0/script-reference/unityengine/object/destroyimmediate.md)
* [Object.FindObjectsByType(Type, FindObjectsSortMode)](/engine/6000.0/script-reference/unityengine/object/findobjectsbytype.md#findobjectsbytype\(type-findobjectssortmode\))
* [Object.FindObjectsByType(Type, FindObjectsInactive, FindObjectsSortMode)](/engine/6000.0/script-reference/unityengine/object/findobjectsbytype.md#findobjectsbytype\(type-findobjectsinactive-findobjectssortmode\))
* [Object.DontDestroyOnLoad(Object)](/engine/6000.0/script-reference/unityengine/object/dontdestroyonload.md)
* [Object.FindObjectsByType\<T>(FindObjectsSortMode)](/engine/6000.0/script-reference/unityengine/object/findobjectsbytype.md#findobjectsbytypet\(findobjectssortmode\))
* [Object.FindObjectsByType\<T>(FindObjectsInactive, FindObjectsSortMode)](/engine/6000.0/script-reference/unityengine/object/findobjectsbytype.md#findobjectsbytypet\(findobjectsinactive-findobjectssortmode\))
* [Object.FindFirstObjectByType\<T>()](/engine/6000.0/script-reference/unityengine/object/findfirstobjectbytype.md#findfirstobjectbytypet\(\))
* [Object.FindAnyObjectByType\<T>()](/engine/6000.0/script-reference/unityengine/object/findanyobjectbytype.md#findanyobjectbytypet\(\))
* [Object.FindFirstObjectByType\<T>(FindObjectsInactive)](/engine/6000.0/script-reference/unityengine/object/findfirstobjectbytype.md#findfirstobjectbytypet\(findobjectsinactive\))
* [Object.FindAnyObjectByType\<T>(FindObjectsInactive)](/engine/6000.0/script-reference/unityengine/object/findanyobjectbytype.md#findanyobjectbytypet\(findobjectsinactive\))
* [Object.FindFirstObjectByType(Type)](/engine/6000.0/script-reference/unityengine/object/findfirstobjectbytype.md#findfirstobjectbytype\(type\))
* [Object.FindAnyObjectByType(Type)](/engine/6000.0/script-reference/unityengine/object/findanyobjectbytype.md#findanyobjectbytype\(type\))
* [Object.FindFirstObjectByType(Type, FindObjectsInactive)](/engine/6000.0/script-reference/unityengine/object/findfirstobjectbytype.md#findfirstobjectbytype\(type-findobjectsinactive\))
* [Object.FindAnyObjectByType(Type, FindObjectsInactive)](/engine/6000.0/script-reference/unityengine/object/findanyobjectbytype.md#findanyobjectbytype\(type-findobjectsinactive\))
* [Object.ToString()](/engine/6000.0/script-reference/unityengine/object/tostring.md)
* [Object.name](/engine/6000.0/script-reference/unityengine/object/name.md)
* [Object.hideFlags](/engine/6000.0/script-reference/unityengine/object/hideflags.md)

### Operators

| Operator                                                                           | Description                                                             |
| ---------------------------------------------------------------------------------- | ----------------------------------------------------------------------- |
| [operator ==](/engine/6000.0/script-reference/unityengine/object/op-equality.md)   | Compares two object references to see if they refer to the same object. |
| [bool](/engine/6000.0/script-reference/unityengine/object/op-implicit.md)          | Determines whether the object exists.                                   |
| [operator !=](/engine/6000.0/script-reference/unityengine/object/op-inequality.md) | Compares if two objects refer to a different object.                    |