Or perhaps a special case of make(chan) which takes io.Reader objects and provides the next readable member via <-c

func f(list ...net.Conn) error {
   c := make(chan, list...)
   buf := make([]byte, kSize)

   for r := range c {
      len, err := r.Read(buf)
      if err != nil { return err }
      something(buf[:len])
   }
}

@networkimprov thanks, it's helpful

@networkimprov and where i can read about special cases?

What I suggested would require a change to the language, so doesn't help right now.

This is also raised in #15735 by @bradfitz

Or perhaps a special case of make(chan) which takes io.Reader objects and provides the next readable member via <-c

func f(list ...net.Conn) error {
   c := make(chan, list...)
   buf := make([]byte, kSize)

   for r := range c {
      len, err := r.Read(buf)
      if err != nil { return err }
      something(buf[:len])
   }
}

And how do i add net.Conn's to such channel?

Let's take this discussion to golang-nuts. We already have #15735 and I don't see anything new here.