Posts tagged design patterns
Use magic methods __setitem__() and __getitem__() in Python
- 30 September 2023
In Python, there are two magic methods that can be used to implement the behavior of the subscript operator []. These methods are object.__setitem__() and object.__getitem__(). The first one is used to assign a value to an item, the second one is used to retrieve an item.
The following example shows how to use these methods to implement a memory class as a list of bytes that was used in the 6502 emulator. The memory class has two methods get() and set() that are used to retrieve and assign a value to a memory address.
Chaining methods in Python
- 14 September 2023
Method chaining is a programming style in which multiple method calls are made on the same object, in sequence. Each method call returns the object itself, so the next method can be called on it without having to assign the object to a variable in between.
This can make code more concise and readable, as it can be written as a single line of code instead of multiple lines. It can also make code more efficient, as the object does not have to be passed around between methods.