Make FIFO (try)recv{,_deadline,_timeout}
return ZResult<Option<T>>
#1521
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The changes in #1504 removed the
flume
error types; inzenoh
all errors areBox<dyn std::error::Error>
(for what it's worth). For distinguishing "disconnected" and "empty/timeout" channel errors, anOption
is used, exactly likeRingChannelHandler
.I believe we could've used proper error types, but it's too late for that now.