Is detecting stock market bubbles possible?

January 10th, 2016

My article introducing the idea behind website — Is detecting stock market bubbles possible?


January 3rd, 2016

Create responsive landing pages in your browser – no tech skills required.

Introduction of my side project

How to create a landing page under an hour?

Equals confusion in Java

December 23rd, 2015

My article about pretty basic, but important concept in Java: do-s and don’t-s when implementing the equals() method on objects

Definitely a thing every good developer must know :)

Global Day of Code Retreat, Cluj 2014

December 6th, 2015

My last year’s experience with Global Day of Code Retreat in Cluj, Romania.

Let’s Encrypt on nginx & Amazon Linux

November 24th, 2015

Automatic installation of Let’s Encrypt SSL certificate for nginx on Amazon Linux is not yet supported. Let’s see how we can do this manually.

To generate the certificate, execute:

sudo service nginx stop
git clone
git checkout amazonlinux
cd letsencrypt
sudo letsencrypt-auto -v

Most likely, this will fail on:

c/_cffi_backend.c:2:20: fatal error: Python.h: No such file or directory

To fix that, run:

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Ignite Cluj

November 24th, 2015

Short article about the first Ignite ever in Cluj last year, which I helped to organise.

Quick fix for really slow PHP mail()

November 1st, 2014

To fix painfully slow PHP mail function (you are also probably getting lots of

unable to qualify my own domain name

errors in /var/log/mail.log), make sure that both localhost and localhost.localdomain are in your /etc/hosts file: localhost localhost.localdomain

Also add localhost.localdomain as new line to /etc/mail/local-host-names file.

As the last step, restart sendmail:

service sendmail restart

You can quickly test by running:

mail -s "Test Email" your@email < /dev/null

Xamarin – Mac OS 10.10 Yosemite as a build host

September 15th, 2014

There is an annoying error when you try to pair the Visual Studio + Xamarin combo with Mac OS 10.10 Yosemite build host:

The PIN you entered was invalid. Please ensure you have entered the correct PIN

Even though you are entering correct PIN. To fix this, execute on Windows machine:

telnet [ip address of mac host] 5000

If you get an error similar to this:

system_profiler[18700:1303078] Error loading /System/Library/SystemProfiler/SPNVMeReporter.spreporter: Error Domain=NSCocoaErrorDomain Code=4 “The bundle “SPNVMeReporter.spreporter” couldn’t be loaded because its executable couldn’t be located.”

Go to /System/Library/SystemProfiler/ and most likely the SPNVMeReporter.spreporter bundle will have zero size. Delete it (or move it to a safe place) and try pairing again, it should work this time.

To: field ala iOS Mail

February 23rd, 2013

If you’d like to add something like this to your iOS app:

Make sure you check out my fork.

Please check my latest project, Shiftr, also!

Logging from iOS to – II.

November 9th, 2012

In the last article we showed how to report iOS app crashes to the service.

Today, we’re going to demonstrate how to symbolicate those crash reports.

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