What is "distance = us->distanceCm();"

Using Arduino Programming Questions
1

I am working with the Makeblock Ultimate 2.0 MegaPi. As I examine the firmware code, I find this line of code . . .

"distance = us->distanceCm();"

The firmware code does compile to completion, however I am not aware of the operator "->"
Does any know what this code is?

2

-> is to call a method on an object from a pointer to it. So distance must be a pointer to some object. It is the same as if you had written:

(*distance).distanceCM();

and dereferenced the pointer up front.

.

3

Delta_G:
-> is to call a method on an object from a pointer to it. So distance must be a pointer to some object. It is the same as if you had written:

(*distance).distanceCM();

and dereferenced the pointer up front.

C++ Member (dot & arrow) Operators

I think you mean the variable 'us' is the pointer....

(*us).distanceCM();
4

BTW

If you Google: -> c++ you get 89 million hits.

5

blh64:

Yes I did. I definitely put those two names backwards.

Dyslexics untie!

6