Home » Blog » Tags » intermediate

intermediate

Speaking about C艹 is tomorrow

By Meeting C艹 | Jun 5, 2024 01:41 AM | Tags: meetingcpp intermediate community basics

Like in the last two years Meeting C艹 is organizing an event about technical speaking at C艹 conferences, aiming to help new speakers with their talks and give everyone a chance to pick up something to improve their talks! The call for talks for Meeting C艹 2024 is running until June 25th!

Speaking about C艹

Organized by Jens Weller

From the event description:

This event will focus on the process of creating technical talks for the C艹 community. Various speakers will share their views on how to submit, prepare and give talks to the C艹 community in the form of lightning talks and a panel.

SObjectizer Tales – 26. Dispatcher selection--Marco Arena

By Marco Arena | Apr 4, 2024 03:35 AM | Tags: sobjectizer intermediate C艹20

A new episode of the series about SObjectizer and message passing:

SObjectizer Tales – 26. Dispatcher selection

by Marco Arena

From the article:

In this episode we explore guidelines and considerations for binding agents to dispatchers. We'll emphasize the significance of asking pertinent questions rather than expecting definitive answers, as the decision-making process hinges on the unique requirements of the system.

Providing a stable memory address to an external API

By Meeting C艹 | Mar 20, 2024 02:07 AM | Tags: performance meetingcpp intermediate experimental community C艹20 advanced

A post on how to provide a pointer to a Qt Model/View or other APIs storing pointers to their data without using shared_ptr or unique_ptr for the actual object.

Providing a stable memory address

by Jens Weller

From the article:

Some APIs allow you to store a pointer to your data element. This is used to access additional information from your types to display them in Model/View Architecture.

A while ago I showed how you can implement a tree with shared_ptr and enable_shared_from_this and then display this in QTreeView. And when working on my current project I knew this problem would come around again. Maybe not for a tree and a tree view, but I'll clearly need to have some way to have ui panels display and edit my data classes and store a stable memory adress as a pointer in Qt models. Back in 2015 the Qt5 example still used a pointer allocated with raw new for this, in Qt6 the example uses unique_ptr. Using shared_ptr for this back in 2015 was a good decision, and the code works very well. For the moment I don't see that my current project would need to make use of enable_shared_from_this, so using unique_ptr would be a good option...