Module qtjambi

Package io.qt.core

Class QScopeGuard

java.lang.Object

io.qt.core.QScopeGuard

All Implemented Interfaces:

AutoCloseable

public final class QScopeGuard
extends Object
implements AutoCloseable

QScopeGuard is a class of which the sole purpose is to run the function f at the end of a try-with-resource block. This is useful for guaranteeing your cleanup code is executed, whether the function is exited normally, exited early by a return statement, or exited by an exception.

See QScopeGuard.

Example:

QIODevice device = ...
try(var guard = new QScopeGuard(device::close)){
if(!device.open())
guard.dismiss();
else
device.write(...);
}

Constructor Summary

Constructors

Constructor	Description
QScopeGuard(Runnable function)	Create a scope guard that will execute function at the end of the scope.

Method Summary

Modifier and Type	Method	Description
void	close()
void	dismiss()	Disarms the scope guard, so that the function F will not be called at the end of the scope.
static QScopeGuard	qScopeGuard(Runnable runnable)	The qScopeGuard function can be used to call a function at the end of the scope.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

QScopeGuard

public QScopeGuard(Runnable function)

Create a scope guard that will execute function at the end of the scope.

Parameters:

function - runnable to be executed

Method Details

close

@QtUninvokable
public void close()

Specified by:

close in interface AutoCloseable

dismiss

@QtUninvokable
public void dismiss()

Disarms the scope guard, so that the function F will not be called at the end of the scope.

qScopeGuard

@QtUninvokable
public static QScopeGuard qScopeGuard(Runnable runnable)

The qScopeGuard function can be used to call a function at the end of the scope.

See qScopeGuard<T>(F &&f)