30.09.2019 
With this blog post we are going to kickstart our brand new blog series about KDToolBox. The first class we’re exploring is KDTableToListProxyModel, a table-to-list proxy model. The main use case for KDTableToListProxyModel is exposing tabular models to Qt Quick. Qt Quick has a certain number of “view” elements that only support list models: for […]
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Introducing KDToolBox KDAB R&D contribution of useful C++ classes
At KDAB we invest a significant amount of efforts in research and development. We are always looking for new tooling, libraries and utilities that can make our job easier and improve the C++ and Qt ecosystems. Ultimately, the gained knowledge and skills make our customers happier. As part of this process we develop lots of […]
Little Trouble in Big Data – Part 3 Dealing with resource bottlenecks
In the previous two blogs in this series I showed how solving an apparently simple problem about loading a lot of data into RAM using mmap() also turned out to require a solution that improved CPU use across cores. In this blog, I’ll show how we dealt with the bottleneck problems that ensued, and finally, […]
Little Trouble in Big Data – Part 2 improving CPU utilization across cores
In Part 1 of this series we solved the problem of using mmap() to load large set of data into RAM all at once. The catch was that it still took too long. In this blog, I describe how we solve this.
Little Trouble in Big Data – Part 1 how to use mmap() to load a large data set into RAM
We got a call from a bioinformatics group at a European university. The problem appeared simple, how to usemmap() to load a large data set into RAM all at once. OK, no problem I thought...
KDAB at CppCon 2019 September 15-20
CppCon is the annual, week-long face-to-face gathering for the entire C++ community – the biggest C++ event in the world. This year, for the first time, CppCon takes place in the stunning Gaylord Rockies Hotel and Convention Center in Aurora, Colorado, very near Denver International Airport. KDAB is a Bronze sponsor this year, and Milian Wolff is […]
KDAB at ACCU, Bristol April 10th - 13th
ACCU is the foremost annual conference in the UK for people interested in C++ and C, and runs from Wednesday the 10th to Saturday 13th April at the Bristol Marriott City Centre Hotel, with pre-conference tutorials on April 9th. Keynote Speakers on the 10th and 13th are Angela Sasse, Herb Sutter, Paul Grenyer and Kate […]
Making the Most of your Memory with mmap
Today’s complex applications can soak up megabytes, a memory management strategy is crucial for RAM intensive applications like image/video processing, massive databases, and machine learning.
Qt on CMake Workshop Summary – Feb ’19 - Porting Qt to the CMake build system
Intro Last Monday and Tuesday a few brave souls from both the Qt Company and KDAB gathered together in the KDAB Berlin office premises to work on the CMake build system for building Qt. There was Mikhail, Liang, Tobias, Kai, Simon (QtCompany) as well as Jean-Michaël, Albert, Volker and me (KDAB) sitting together in a […]
Clazy 1.5 released
Clazy 1.5 is now available. This is a small release, mainly focused on bug fixing. Clazy is a clang compiler plugin which emits warnings related to Qt best practices. We’ll be showing Clazy at Embedded World, Nuremberg, Feb 26-28, where we are a main Qt partner. You can read more about it in our previous […]