Oleg Andreev



Software designer with focus on user experience and security.

You may start with my selection of articles on Bitcoin.

Переводы некоторых статей на русский.


Product architect at Chain.

Author of Gitbox version control app.

Author of CoreBitcoin, a Bitcoin toolkit for Objective-C.

Author of BTCRuby, a Bitcoin toolkit for Ruby.

Former lead dev of FunGolf GPS, the best golfer's personal assistant.


I am happy to give you an interview or provide you with a consultation.
I am very interested in innovative ways to secure property and personal interactions: all the way from cryptography to user interfaces. I am not interested in trading, mining or building exchanges.

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August 14

Null Pattern revisited again

Articles on Null pattern

Now, working with Objective-C where nil eats messages, I realized that the code is more elegant, but it takes significant amount of time to debug it. You create if/else branches and breakpoints to trace the nil, then you fix the bug which causes it and erase the conditional code. You get your elegant code back and wait for another issue to arise later.