Let's go invent tomorrow instead of worrying about what happened yesterday|mail@jankowskimichal.pl
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Michał Jankowski

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About Michał Jankowski

Microsoft MVP Azure, an architect, designer, team leader and trainer. He began programming in the early ’90s from Basic and Assembler for 8-bit computers. During most of his career, he was delivering .NET platform targeted application for the world’s largest companies. Currently, he is specialising in the development of web applications and Azure environment. A great enthusiast of software craftsmanship, unit testing, software design and other topics related to software development. In his free time, when he is not playing with the code, he likes travelling, photography and writing a technical blog.

The saved-state file … is corrupted

Sooner or later every one of us will get error as follows on the Windows Phone emulator: [box color=”blue” icon=”busy” size=”big”]Error: The saved-state file C:\ProgramData\Microsoft\XDE\{7F63A4C3-95DE-4DF2-91A9-AEC63BBDD089}.dess is corrupt. Please delete the corrupted saved state file and then retry.[/box] The message will be almost the same. The only difference will be GUID. As you can see error is quite easy to solve because there is description what user should do. As soon as we remove files with the same GUID from provided directory, Windows Phone emulator will start. But… […]

By |2012-12-10T07:28:54+01:0010 December 2012 |Categories: Software development|Tags: , |0 Comments
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Oh that recursion…

Some time ago I lost two days for finding trivial bug. It was done completely unconsciously. Anyway, as most of other bugs. Application started to behave quite strange – after launching, it crashed immediately. Probably you will ask yourself what it is unusual. I have started standard procedure – run application with connected a debugger. But debugger was useless. Application crashed without any notification disconnecting the debugger. I have not got any single clue that will help me to solve this riddle. […]

By |2013-06-10T13:50:46+02:003 December 2012 |Categories: Software development|Tags: , , , |2 Comments
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My first million…

Some time ago, I have announced that in next year 1.2 billion new smartphones will be sold on the market. This huge number can lure many developers to mobile market. I suggest that you should avoid Poland store if you want to create paid applications. According to researches provided by Xyologic, statistical Pole is not willing to buy application on mobile devices. Let’s look at September. In this month Poles downloaded 32.33 millions of apps for Android and 3.54 for iPhone. I encourage you to try guess what is the number of downloaded paid applications. […]

By |2012-11-26T09:24:18+01:0026 November 2012 |Categories: Other|Tags: |2 Comments
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1.2 billion new smartphones in 2013

You should start working at your one million dollar application. The revolution which has begun few years ago is still pushing us forward. According to Gartner in this year [mark]821 million of new smartphones[/mark] will be bought. In next year this number will increase by 45% to [mark]1.2 billion[/mark]. In 2012 smartphones will take 70% of whole new mobile phone sold at market. In the nearest future almost all of us will carry smart phone in a pocket. The second branch of mobile market that have not conquered market are tablets. Sales of this product in this year should reach [...]

By |2012-11-19T11:58:10+01:0019 November 2012 |Categories: Other|Tags: |0 Comments
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1000 hours of programming and the game was complete

The game development has been quite easy some time ago. Below you can find quote describing how game Pitfall has been created. I sat down with a blank sheet of paper and drew a stick figure in the centre. I said, ‘Okay, I have a little running man and let’s put him on a path’ (two more lines drawn on the paper). ‘Where is the path? Let’s put it in a jungle’ (draw some trees). ‘Why is he running?’ (draw treasures to collect, enemies to avoid and so on). And Pitfall! was born.” The man became known as Pitfall Harry. [...]

By |2013-09-01T15:46:52+02:007 November 2012 |Categories: Other|1 Comment
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MTS 2012 – Questions

After our session on MTS there were two questions. I think that those questions need some comment. We were not 100% sure of answers, so we said that it will be the best to make some test and check how the phone will behave. We didn’t have possibility to do this on MTS, so we have done it now. The results confirmed our answers. […]

By |2013-06-10T13:51:17+02:007 November 2012 |Categories: Conferences / Presentations, Software development|Tags: , |0 Comments
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Developers’ account almost for free

New product of Microsoft – Windows 8 and Windows Phone 8 – has premiere this week. Since yesterday developers can download the Windows Phone 8 SDK. In addition to this two events Microsoft has announced that over next eight days developers [mark]can register for a Dev Center account for just $8[/mark]. The original price is $99. At beginning developers will be charged $99 and then in the next 45 days the difference will be refunded. More details can be founded at Microsoft web page.

By |2020-12-20T23:37:59+01:0031 October 2012 |Categories: Other|Tags: , |1 Comment
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