String.trim() returns void ???

Using Arduino Programming Questions
1

What's up with this:

Strings are supposed to be immutable!

2

C/C++ doesn't have a concept of immutable, it does however have const.

3

it is not Java

4

skyjumper:
Strings are supposed to be immutable!

Where did you get that idea?

5

johnwasser:
Where did you get that idea?

Like @Juraj said, it's a java/python thing. I don't know what the OP's trying to accomplish with this post.

6

My mistake, I do the vast majority of my work in Java and I was half asleep when I posted that. I had done something like:

String newString = myString.substr(3).trim().toUpperCase();

Which of course failed. I let my frustration get the better of me, sorry.