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Added Compat.AbstractDateTime #443

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Jan 10, 2018
Merged

Added Compat.AbstractDateTime #443

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d9c6d23
Added Compat.AbstractDateTime.
rofinn Dec 30, 2017
1c4cece
Added tests and README entry for AbstractDateTime.
rofinn Dec 31, 2017
8fc254c
Added DateTime subtype check.
rofinn Jan 7, 2018
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -295,7 +295,7 @@ Currently, the `@compat` macro supports the following syntaxes:

## New types

Currently, no new exported types are introduced by Compat.
* `Compat.AbstractDateTime` is an alias for `Compat.Dates.AbstractDateTime` as of ([#25227]) and `Compat.Dates.TimeType` prior to that.

## Developer tips

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6 changes: 6 additions & 0 deletions src/Compat.jl
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Expand Up @@ -769,6 +769,12 @@ else
import Dates
end

if VERSION < v"0.7.0-DEV.3216"
const AbstractDateTime = Compat.Dates.TimeType
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Seems slightly dangerous to use with dispatch. You could accidentally be given a Date or Time. I'm not sure what a better solution would be ATM

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Possibly just having a const AbstractDateTime = Union{DateTime, ZonedDateTime} in TimeZones.jl would be a better solution. Doing this in Compat would make TimeZones a requirement in Compat which is probably worse.

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@rofinn rofinn Jan 1, 2018 •
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That could also work for our use cases, but I figured it's better to write code that is a bit too general than too restrictive. IFAICT, the worst case scenario is that someone passes in a Date or Time and the code errors at a later point... making the traceback more complicated.

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A possible alternative solution is to implement @compat AbstractDateTime which would re-write this as a Union{DateTime,ZonedDateTime}. That would probably be a bit too annoying though.

else
const AbstractDateTime = Compat.Dates.AbstractDateTime
end

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Probably should export this

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That seems like an odd choice given that it isn't exported in base.

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You are right here. Don't export this since it isn't exported in Base

if VERSION < v"0.7.0-DEV.3052"
const Printf = Base.Printf
else
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4 changes: 4 additions & 0 deletions test/runtests.jl
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Expand Up @@ -1075,6 +1075,10 @@ end
# 0.7.0-DEV.3172
@test replace("abcb", "b"=>"c") == "accc"
@test replace("abcb", "b"=>"c", count=1) == "accb"
# 0.7.0-DEV.3216
@test Compat.AbstractDateTime === (isdefined(Compat.Dates, :AbstractDateTime) ? Compat.Dates.AbstractDateTime : Compat.Dates.TimeType)
@test Compat.AbstractDateTime <: Compat.Dates.TimeType
@test Compat.Dates.DateTime <: Compat.AbstractDateTime

if VERSION < v"0.6.0"
include("deprecated.jl")
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