Why is OOP still so widely spread?

Re:Why is OOP still so widely spread? by teekert on Thursday September 03, 2020 @04:23AM (#24361904)

Thank this is a very nice answer and it makes sense to me. Indeed I once sat down to try Kotlin for a day. The amount of code I had to write to get a json from an api into a dict that I could address by key was baffling to me. In python it took met 2 imported modules and then 2 lines (something like

    some_dict = module.scrape_api()
    value_I_want = some_dict['my_value']

I gave up after a day, when I just wrote down exactly what I expected to pull down and what types were in the values and keys. I can understand it helps you prevent errors but man is there a learning curve... BTW, I could write those checks in Python as well, but they are optional.

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Re:Why is OOP still so widely spread? by garethrowlands on Thursday September 03, 2020 @09:13AM (#24363690)

> I could write those checks in Python as well, but they are optional

You're probably going to need to check `value_I_want` though. So maybe the checks aren't quite as optional as they look.

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Re:Why is OOP still so widely spread? by dheera on Thursday September 03, 2020 @12:36PM (#24365791)

Checks in Python are pretty concise. If you just want to have a default value if the key my_value doesn't exist, this is all you need:

    value_I_want = some_dict.get('my_value', default_value)

If you want a more strict check including type checking:

    value_I_want = some_dict.get('my_value')
    if type(value_I_want) is not str:
        do_something()

In Java the real problem is nested JSON objects -- it's a real PITA to read those. You can't do something like this (Python):

    value = some_dict.get("foo", {}).get("bar", {}).get("blah", default_value)

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Re:Why is OOP still so widely spread? by teekert on Friday September 04, 2020 @02:23AM (#24372246)

I believe one can even do:

    value_I_want = some_dict.get('my_value':str)

and

    value = some_dict["foo"]["bar"]["blah"]

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