IOOperation (Tapestry API - 5.8.7)

```
public interface IOOperation<T>
```
An operation that, when performed, returns a value (like Invokable, but may throw an IOException.

Since:

5.4

See Also:

OperationTracker.perform(String, IOOperation)

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  T perform()
  Perform an operation and return a value, or throw the exception.

- Method Detail
  - perform
```
T perform()
   throws java.io.IOException
```
    Perform an operation and return a value, or throw the exception.
    
    Throws:
    
    java.io.IOException