The following never works and can't be made to work:
var ch = ischannel[unit] ();
var u = read ch;
The reason is: you cannot use the unit value u, so the read is
optimised away. Even
C_hack::ignore(u);
fails with a diagnostic, because Felix tries to optimise away all units,
and there's a diagnostic in the code generator to report when the
front end failed to do this. The only way to do it is to use
a supervisor call, and it isn't clear even that will work.
--
john skaller
skal...@users.sourceforge.net
http://felix-lang.org
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