ref: b6afe89b0d5928f317e8d554cec49d6e8f40a3d8
dir: /libstd/sljoin.myr/
use "alloc.use"
use "slcp.use"
pkg std =
generic sljoin : (dst : @a[:], src : @a[:] -> @a[:])
;;
generic sljoin = {dst, src
var len
len = dst.len
dst = slgrow(dst, len + src.len)
slcp(dst[len:], src)
-> dst
}