Typo3 signal slot return value

Dispatcher::dispatch, typo3\flow3\signalslot PHP Code... -…

* One slot can be connected with multiple signals by calling this method multiple times. * Tutorial - 1.61.0 - boost.org The following example writes "Hello, World!" using signals and slots. First, we create a signal sig, a signal that takes no arguments and has a void return value.Next, we connect the hello function object to the signal using the connect method. Finally, use the signal sig like a function to call the slots, which in turns invokes HelloWorld::operator() to print "Hello, World!". PyQt/Sending Python values with signals and slots - Python ... Sending Python values with signals and slots. On the #pyqt channel on Freenode, Khertan asked about sending Python values via Qt's signals and slots mechanism. The following example uses the PyQt_PyObject value declaration with an old-style signal-slot connection, and again when the signal is emitted, to communicate a Python dictionary. JSON view - Use TYPO3

Extending Classes in TYPO3

Sending Python values with signals and slots. On the #pyqt channel on Freenode, Khertan asked about sending Python values via Qt's signals and slots mechanism. The following example uses the PyQt_PyObject value declaration with an old-style signal-slot connection, and again when the signal is emitted, to communicate a Python dictionary. TYPO3 CMS 7.0 - What’s New

Just for the ones with similar scenarios: the hook does not "apply" to cascaded deletes (in my example e.g. the deletion of songs when an artist is deleted) so you have to keep the related childs in mind from parent view (when delete action is performed on parent_table, as delete on child_table check only applies when the child is deleted in the backend, not in case of cascaded deletion, if ...

There are two drawbacks in this simple implementation: It’s not threadsafe and you cannot disconnect a slot from a signal from within the slot callback. Both problems are easy to solve but would make this example more complex. Using this Signal class other patterns can be implemented easily.

TYPO3CMS: ExtensionManagementUtility Class Reference

22 Mar 2019 ... ... Predefined Constants Reference · Flow Signals Reference · TYPO3 Fluid ... Declares a method as an after returning advice to be triggered after any pointcut .... Marks a method as a signal for the signal/slot implementation of Flow. ... type ( string): The validator type, either a FQCN or a Flow validator class ...