st's blog

static_cast vs dynamic_cast: undefined behavior

Submitted by st on

Do not use static_cast when you cast from a basic class to a derived one. This may lead to undefined behavior. To handle the polymorphism, a virtual inheritance or a multiple inheritance case always use dynamic_cast instead.

The following short example shows the undefined behavior cases. This works with GCC, VC and online C++ shells:

Qt Test limitations and workarounds

Submitted by st on

Pros and cons

Why use Qt Test for unit testing and TDD (test-driven development)?

  • small testing framework (about 6K lines of source code);
  • seamless integration with QtCreator development environment;
  • full support of Qt framework including classes/types and signal/slots;
  • simple to start and use.

However, there are some drawbacks, too.

The brilliance and poverty of microservices

Submitted by st on

This is the revised translation of my article published in "ITWeek" magazine January 24, 2019.

An expert tries to know more and more about less and less until he knows absolutely everything about nothing. And a philosopher tries to know less and less about more and more until he knows nothing about everything.
Daniil Granin, "Going Inside a Storm"

Agile or not agile

Submitted by st on

Bertrand Meyer's article "Making sense of agile methods" (PDF, November 2017)
Russian translation published in "Open systems" magazine N°2-2018 "Об Agile по гамбургскому счету"

Some citations (I completely agree according to my experience).

Everything will look fine until you suddenly discover that the next user story conflicts with previously implemented ones, and you have to go back and rethink everything

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