I want aggregate dates and find the most recent date in a bunch of dates. For example I want to know the age of the youngest kid in a family. To do this I have to find the
max of several dates. If there are a least two kids everything is fine:
julia> max(Date("2013-07-31"), Date("2017-07-20")) 2017-07-20
However, some families have just one kid:
julia> max(Date("2013-07-31")) ERROR: MethodError: no method matching max(::Date) Closest candidates are: max(::Any, ::Missing) at missing.jl:104 max(::Any, ::Any) at operators.jl:408 max(::Any, ::Any, ::Any, ::Any...) at operators.jl:529 ... Stacktrace:  top-level scope at REPL:1
Real something like this works fine:
julia> max(1.3) 1.3
I would like to see this behavior also for dates and times.