I spotted some possible problems.

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Possible problems detected:
  1. Are you using markdown? Markdown should not be used to augment text in the commit message.
  2. You usually need to reference a bug number for all but trivial or cosmetic fixes. For this repo, the format is usually 'Fixes #12345' or 'Updates #12345' at the end of the commit message. Should you have a bug reference?

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slices.Chunk is intended to cut work packages (chunks, batches)
for parallel processing from larger slices an degenerates
into a remaining slice, if the slice is too short.

In most of the code the second argument of the call
is either constant or a number autocorrected to a minimum value bigger than 1.

So I believe your parameter "size" is miscalculated.
size = min(size, 1)
seems missing.

Hi, thanks for the review

I'll try to be clearer. In the context of splitting a list (for parallel processing, or sequentially send db queries, or network requests)

items := getAllItems()
batch := config.Batch // optional

if batch == 0 {
    batch = len(items)
}

for chunk := slices.Chunk(items, batch) {
    ....
}

The code above will panic if len(items) == 0

To work around the panic, I'll have to use

if batch == 0 {
    batch = len(items)
}

for chunk := slices.Chunk(items, max(1, batch)) {
    ....
}

The condition leading to the panic is easy to miss, can be caught with proper testing but still leads to a bit of verbosity and complexity that could be avoided.

With the proposed PR we can assume that slices.Chunk(s, len(s)) does not split the slice regardless of the size of s.

The code will still panic if len(items) > 0 and batch = 0 because the intention is less clear (batch=1 could be what the user wants).

Removing the panic completely would remove the need of an "if" or cmp.Or, but that doesn't bother me as much -- the moment "batch" is optional, the developer is likely to handle the case where it's 0. He just might not think of the corner case of an empty slice.

Done

I don't think we should do this, n = 0 is a programmer error for Chunk. Code should be explicit in whether they want to progress the entire thing at once, or each item individually.

Adding new edge cases is extra complexity that makes the function harder to understand.