Use best practices for determining the size of an array element

[per1234]

The previous code does not automatically adapt to changes in the type of meusInts.

Reference: arduino/reference-en@b0791f1

[robsoncouto]

@per1234, I have thought about this one. I will use the English example here.

for (i = 0; i < (sizeof(myInts)/sizeof(myInts[0])); i++) {
  // do something with myInts[i]
}

It would be better to add the array atop the existing code for clarity

int myInts[10] // You can change the size and type of the array without modifying the code below. 
for (i = 0; i < (sizeof(myInts)/sizeof(myInts[0])); i++) {
  // do something with myInts[i]
}

But of course having an array called myInts of type float or char would be confusing, so I would recommend changing it to myNumbers, myValues or anything generic like that.

Tell me what you think, if you agree, this can be done in the reference-en repo first and then sync'd here.

[per1234]

Good idea for improving the example! I think this code could be a little confusing to a beginner and it's a very important fundamental of writing good for loop code to work with arrays.

After a look at that section of the page with "beginner's eyes", I found that the lack of the array definition in the code, combined with no mention of arrays in the description increased my confusion. I have implemented your suggestion in arduino/reference-en#538, with some changes of my own. Please let me know if you want me to make any changes.

[robsoncouto]

Your implementation at arduino/reference-en#538 is just perfect :)
I will wait for the new issue here, and leave this PR open for the while.
This idea fits very well a repository of mine, will implement it there as well.
Thanks per.

[per1234]

@robsoncouto did you still want to merge this? If so, I'll fix the merge conflict. I think it's best for the translation repositories to mirror reference-en, other than that they are translated to a different language.

This was a bit of a weird one because I pushed directly to the reference-en repository, rather than submitting a pull request (at that time, I had gotten the OK to do that from someone at Arduino). However, after making the commit to reference-en, I found that the automated issue reports are only submitted to the translation repositories when a pull request is merged. I submitted pull requests to all the translation repositories, so that wasn't a big problem, but it means there's no issue report to reference to as there usually is. Instead, I just referenced the commit in reference-en: arduino/reference-en@b0791f1

[robsoncouto]

Hi per!
No, I don't. I just left it open as a reminder. I will close this when I submit the pull request to translate arduino/reference-en#538 which is issue #289 in this repository, as I said.
I don't really understand what you mean about mirroring reference-en, though.

[per1234]

By "mirroring reference-en", I mean that every time there is a change to the reference-en repository, the equivalent change is made in each of the translation repositories.

[robsoncouto]

Closed in favor of #341.