The article presents the indicators, described in the book by William Blau "Momentum, Direction, and Divergence". William Blau's approach allows us to promptly and accurately approximate the fluctuations of the price curve, to determine the trend of the price movements and the turning points, and eliminate the price noise. Meanwhile, we are also able to detect the overbought/oversold states of the market, and signals, indicating the end of a trend and reversal of the price movement.
Even simple programs may often have errors that seem to be unbelievable. "How could I create that?" is our first thought when such an error is revealed. "How can I avoid that?" is the second question which comes to our mind less frequently. It is impossible to create absolutely faultless code, especially in big projects, but it is possible to use technologies for their timely detection. The article describes how the MQL4 code quality can be enhanced with the help of the popular Unit Testing method.
The player of trading. Only four words, no explanation is needed. Thoughts about a small box with buttons come to your mind. Press one button - it plays, move the lever - the playback speed changes. In reality, it is pretty similar. In this article, I want to show my development that plays trade history almost like it is in real time. The article covers some nuances of OOP, working with indicators and managing charts.