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# MLTask

An abstract base class for machine learning tasks.

```
class MLTask
```

## Overview

You don’t create use this class directly. Instead, use a class that inherits from this one, such as [`MLUpdateTask`](/documentation/CoreML/MLUpdateTask).

## Topics

### Identifying a task

[`taskIdentifier`](/documentation/CoreML/MLTask/taskIdentifier)

A unique name of the task to distinguish it from all other tasks at runtime.

### Starting and stopping a task

[`resume()`](/documentation/CoreML/MLTask/resume())

Begins or resumes a machine learning task.

[`cancel()`](/documentation/CoreML/MLTask/cancel())

Cancels a machine learning task before it completes.

### Checking the state of a task

[`state`](/documentation/CoreML/MLTask/state)

The current state of the machine learning task.

[`MLTaskState`](/documentation/CoreML/MLTaskState)

The state of a machine learning task.

[`error`](/documentation/CoreML/MLTask/error)

The underlying error if the task is in a failed state.


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