Conditional statements (if-else statements) are common structures in programming and are used to execute different blocks of code based on different conditions. However, when the conditional statement has many branches or the conditions are complex, the code will become lengthy and difficult to maintain. In back-end development, we often need to deal with various conditional logic, so it is very important to optimize the performance and readability of conditional statements. Several solutions for optimizing conditional statements will be introduced below.
- Use dictionary mapping:
When the conditional statement has many branches, you can consider using dictionary mapping to replace multiple if-else branches. You can use the condition as the key of the dictionary and the corresponding execution logic as the value of the dictionary. The advantage of this is that it can decouple conditions from execution logic, making the code more concise and readable.
def process_data(data_type, data):
handler = {
'type1': process_type1,
'type2'