Can't we just make the LHS of `&` a `sink` parameter?
- Concatenation of seq and array? haoliang
- Concatenation of seq and array? Hlaaftana
- Concatenation of seq and array? sls1005
- Concatenation of seq and array? Hlaaftana
- Concatenation of seq and array? sls1005
- Concatenation of seq and array? Hlaaftana
- Concatenation of seq and array? sls1005
