swift - Why initializing JSONdecoder?

Question

When looking at coding examples on how to use the JSONDecoder in Swift, most often it is first being initialised and then used. Something along those lines:

let decoder = JSONDecoder()
decoder.decode(...)

All that usually sits within a function. What I am wondering is why doesn't the JSONDecoder be directly used? I.e. JSONDecoder().decode(...). This should also work and lead to less code. Also, initialisation would anyway happen for each function call separately, so it sohuld be the same from an efficiency perspective. Am I missing something?

question from:https://stackoverflow.com/questions/65858425/why-initializing-jsondecoder

Answer 1

No, you are right. However, most times developers set other properties, like the decoding strategy of the object, and then use it. So it makes sense to first initialize it, set the properties/option, and then decode.