a blog about coding
Encapsulation is a staple of object-oriented programming: by hiding (or “abstracting away”) the implementation details of a class behind a public interface we can create abstract data types. Users of...
Templates are a very powerful feature of C++: they let us parameterize a class, function or variable with some generic types or values (called template parameters), so that by specifying...
by Luca Davidian · Published May 24, 2019 · Last modified August 7, 2019
The Strategy design pattern is a perfect example of the OOP tenet that says: “favor composition over inheritance”. Inheritance is indeed powerful when it comes to code reuse, or when...
by Luca Davidian · Published September 27, 2018 · Last modified August 7, 2019
Many systems wait continuously for the occurrence of some event, and they react to the event by performing computations or changing their state. Once the event is handled, they go...
According to the GoF book, the intent of the Composite pattern is to “compose objects into tree structures to represent part-whole hierarchies. Composite lets clients treat individual objects and compositions...
by Luca Davidian · Published September 16, 2018 · Last modified August 7, 2019
The Observer Pattern According to the GoF book the Observer pattern “defines a one to many dependency between objects so that when one object changes state, all its dependents are...
by Luca Davidian · Published September 15, 2018 · Last modified August 7, 2019
The Command Pattern The Gang of Four’s book gives the following definition of the command pattern: “The Command pattern encapsulates a request as an object, letting you parameterize clients with...
In this project I explain how to drive NeoPixels with an Arduino M0 PRO (SAMD21) using the SPI peripheral with the DMA controller to create colored animated patterns. Since displaying...
by Luca Davidian · Published November 17, 2017 · Last modified August 20, 2019
When we want to transfer data to/from a peripheral device to perform I/O operations we generally use memory mapped IO: peripherals’ configuration and control registers are mapped to the microcontroller...
In this article I explain how to interface a PS/2 keyboard to a microcontroller. Reading characters from a keyboard is just a matter of understanding the PS/2 protocol which is...
Encapsulation is a staple of object-oriented programming: by hiding (or “abstracting away”) the implementation details of a class behind a public interface we can create abstract data types. Users of...
Templates are a very powerful feature of C++: they let us parameterize a class, function or variable with some generic types or values (called template parameters), so that by specifying...
by Luca Davidian · Published May 24, 2019 · Last modified August 7, 2019
The Strategy design pattern is a perfect example of the OOP tenet that says: “favor composition over inheritance”. Inheritance is indeed powerful when it comes to code reuse, or when...
by Luca Davidian · Published September 27, 2018 · Last modified August 7, 2019
Many systems wait continuously for the occurrence of some event, and they react to the event by performing computations or changing their state. Once the event is handled, they go...
According to the GoF book, the intent of the Composite pattern is to “compose objects into tree structures to represent part-whole hierarchies. Composite lets clients treat individual objects and compositions...
by Luca Davidian · Published September 16, 2018 · Last modified August 7, 2019
The Observer Pattern According to the GoF book the Observer pattern “defines a one to many dependency between objects so that when one object changes state, all its dependents are...
by Luca Davidian · Published September 15, 2018 · Last modified August 7, 2019
The Command Pattern The Gang of Four’s book gives the following definition of the command pattern: “The Command pattern encapsulates a request as an object, letting you parameterize clients with...
In this project I explain how to drive NeoPixels with an Arduino M0 PRO (SAMD21) using the SPI peripheral with the DMA controller to create colored animated patterns. Since displaying...
by Luca Davidian · Published November 17, 2017 · Last modified August 20, 2019
When we want to transfer data to/from a peripheral device to perform I/O operations we generally use memory mapped IO: peripherals’ configuration and control registers are mapped to the microcontroller...
In this article I explain how to interface a PS/2 keyboard to a microcontroller. Reading characters from a keyboard is just a matter of understanding the PS/2 protocol which is...
