proposal: strings, bytes: Add JoinSeq

[earthboundkid]

Proposal Details

61901 added SplitSeq and friends to bytes, but nothing for joining. Right now you have to do slices.Collect first or use a bytes.Buffer/strings.Builder, which feels unfortunate. I propose to add strings.JoinSeq(seq iter.Seq[string], sep string) string and the bytes equivalent as well.

[gabyhelp]

Related Issues and Documentation

• proposal: strings: add a Join method to Builder #49546 (closed)

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[seh]

Do you imagine that it would collect all the items from the sequence first to figure out the total length of the final string before concatenating them?

[earthboundkid]

I imagine it would just use a strings.Builder and opt into whatever the default buffer there is. Maybe there could be optimization to use a slice for sequences shorter than N.