I'm trying to change an entire array with one command like this: int list[] = {0,1,2,3}; // (later in function) list = {2,4,6,8}; I know this is wrong, but I just don't know how to do it right. The variable I want to change is global and I want to change it manually within a function.

More often than not, not being able to do something easily or elegantly is a signal that you might want to rethink your solution to your problem. If you need to rewrite a whole array, why not simply provide a reference/pointer to the new contents in place of the the old array?

I'm still very new to Arduino... Maybe you could provide a simple example? I've tried reading things about references before, but I just get lost with overly complex examples. What's the absolute simplest example you can give me?

Not saying this is the best solution but: int list1[]={1,2,3,4}; int list2[]={2,4,6,8}; int* list=list1; //DO STUFF WITH LIST list=list2; //DO STUFF WITH LIST What are you actually trying to do, why do you want to "change" an array like that, there could be better ways to do it.

Okay. One more question. Is there any way to do something like this? int list_orig[] = {0,1,2,3}; int* list_ref = list_orig; list_ref = {2,4,6,8};

Darn. That'll make things complicated. Time to start rewriting code... I'm so used to Python, the limitations on C are ridiculous...

That'll make things complicated. Not necessarily. See the earlier replies. It is very unusual, with all the wealth of mechanisms that C/C++ provides, that you would have to rewrite a fixed array like that. Why waste processor cycles and memory bandwidth moving mass data around, when all you nee…

otacon239: the limitations on C are ridiculous... Actually, C is a less limited than Python. Python is written in C, so if you can do it in Python there will be a way to do it in C, but you have to think about things a bit differently, don't just try and re-write your Python code, think more fun…

What's wrong with a loop that replaces each array element in turn? ...R

What's wrong with a loop that replaces each array element in turn? Because "memcpy" already exists.

How to delete or change an array completely

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system April 24, 2013, 8:26am 6

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How to delete or change an array completely

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