Change the implementation of ObjCStrInstance

[qqfunc]

What is the problem or limitation you are having?

Some methods like ObjCStrInstance.__add__ use Objective-C methods now. However, converting to Python str and then adding is a faster way to do this. The same is perhaps true for the other methods.

This was my simple mistake. Using ns_from_py() at the end of the process required about the same time.

>>> string = NSString.stringWithString("some string")
>>> timeit.timeit(lambda: string + string, number=10000)
>>> timeit.timeit(lambda: ns_from_py(str(string) + str(string)), number=10000)

These require approximately the same amount of time.

Describe the solution you'd like

Just convert to Python str in the methods. Making their classes inherit collections.UserString module might be beautiful way. (It's not a well considered idea.)

Postscript: As above, this was my mistake. However, I still suggest this plan.

Describe alternatives you've considered

Maintain status quo.

Additional context

No response

[freakboy3742]

I'm a little confused about exactly what is being requested here.

As it currently stands, there's a clear line between NSString and str, and a clear point at which the strings change. On that basis, I don't think it's worth complicating both the interface and implementation - especially when, by your own analysis, it won't be any faster.

[qqfunc]

I am so sorry for the confusion.
This is now my vague idea and doesn't seem worth suggesting.