| optional_double_scalar | R Documentation |
S7 property accepting NULL or a single non-NA double value.
optional_double_scalar
An S7 property object.
EDG
Metric <- S7::new_class("Metric", properties = list(offset = optional_double_scalar))
Metric()@offset
Metric(offset = 0.5)@offset
try(Metric(offset = NA_real_))
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