# Max of Date and Missing on 0.6.4?

**URL:** https://discourse.julialang.org/t/max-of-date-and-missing-on-0-6-4/12542
**Category:** Data
**Created:** [July 20, 2018, 4:31pm UTC](https://discourse.julialang.org/t/max-of-date-and-missing-on-0-6-4/12542 "2018-07-20T16:31:45Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![jacobadenbaum](https://avatars.discourse-cdn.com/v4/letter/j/5daacb/32.png) [@jacobadenbaum](https://discourse.julialang.org/u/jacobadenbaum)
#### Post date: [July 20, 2018, 4:31pm UTC](https://discourse.julialang.org/t/max-of-date-and-missing-on-0-6-4/12542/1 "2018-07-20T16:31:45Z")

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Is this a known bug in 0.6.4?

```julia
julia> using Missings

julia> max(Date(1999, 1), missing)
ERROR: MethodError: no method matching ifelse(::Missings.Missing, ::Date, ::Missings.Missing)
Closest candidates are:
  ifelse(::Bool, ::Any, ::Any) at operators.jl:282
  ifelse(::AbstractArray{Bool,N} where N, ::Any, ::Any) at deprecated.jl:56
  ifelse(::AbstractArray{Bool,N} where N, ::Any, ::AbstractArray) at deprecated.jl:56
  ...
Stacktrace:
 [1] max(::Date, ::Missings.Missing) at ./operators.jl:348

```

While on 0.7.0-beta2.0 it returns `missing` (as expected):

```julia
julia> using Dates

julia> max(Date(1999, 1), missing)
missing

```

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### Author: ![nalimilan](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nalimilan/32/147_2.png) [@nalimilan](https://discourse.julialang.org/u/nalimilan)
#### Post date: [July 21, 2018, 12:55am UTC](https://discourse.julialang.org/t/max-of-date-and-missing-on-0-6-4/12542/2 "2018-07-21T00:55:04Z")

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Missings.jl only defines `max` and `min` for numbers, but it should probably be defined for any type as in Julia 0.7. Feel free to file an issue. However development is really focused on Julia 0.7 now.

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### Author: ![jacobadenbaum](https://avatars.discourse-cdn.com/v4/letter/j/5daacb/32.png) [@jacobadenbaum](https://discourse.julialang.org/u/jacobadenbaum)
#### Post date: [July 21, 2018, 2:37pm UTC](https://discourse.julialang.org/t/max-of-date-and-missing-on-0-6-4/12542/3 "2018-07-21T14:37:33Z")

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Yeah that’s what I expected. It’s not a big deal for me and I’m happy to work around it. I just wanted to check.