And again, I had mistyped one thing in initial email:

(* ... *)
var tmp = (recv_buf_pf | recv_buf) (* var instead of val in both similar
lines *)
(* ... *)


чт, 9 июл. 2020 г. в 23:47, ice.r...@gmail.com <ice.redm...@gmail.com>:

> Hi,
>
> I am trying to understand how to use array_foreach_env function to pass to
> fwork environment of more than 1 variables (of viewt@ype).
> For example, I can successfully use following:
>
> vtypedef VT = (array_v(char?, l, recv_sz | ptr l)
> fn walker
>     ( array_v(pollfd_t, fdsl, nfds)
>     , x : &pollfd_t >> _
>     , env: !VT
>     ): void =
>     (* body goes here *)
>
> val tmp = (recv_buf_pf | recv_buf)
> val () = array_foreach_funenv
>                <pollfd_t>
>                {array_v(pollfd_t, fdsl,nfds)}
>                {VT}
>                ( fds_pf | fds, nfds, walker, tmp)
> val (recv_buf_pf | _) = tmp
>
> But, as soon as I want to use VT of type
> vtypedef VT = (array_v(char?, l, recv_sz) | ptr l, size_t recv_sz)
> (* ... *)
> val tmp = (recv_buf_pf | recv_buf, recv_sz)
> (* .. *)
> val (recv_buf_pf | _) = tmp
>
> I am getting the following error:
> error(3): mismatch of sorts:
> the needed sort is [S2RTbas(S2RTBASimp(2; viewtype))];
> the actual sort is [S2RTbas(S2RTBASimp(3; viewt0ype))].
>
> How can I fix this error? Thanks in andvance
>
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