It happened when using DateTimes as columns in a DataFrame. When I tried
to join() one DataFrame with a DateTime variable to another without,
DataFrames threw this error:
ERROR: `zero` has no method matching zero(::Type{DateTime})
in nas at /path/.julia/v0.3/DataFrames/src/dataframe/dataframe.jl:807
in nas at /path/.julia/v0.3/DataFrames/src/dataframe/dataframe.jl:813
in join at /path/.julia/v0.3/DataFrames/src/dataframe/join.jl:154
On Sunday, November 9, 2014 8:17:04 PM UTC-6, Jacob Quinn wrote:
>
> What Date would represent zero(::Date)? Or one(::Date), for that matter?
> Doesn't seem like a particularly useful definition. What's the use case?
>
> On Sun, Nov 9, 2014 at 9:14 PM, Thomas Covert <[email protected]
> <javascript:>> wrote:
>
>> I'm using Dates.jl on 0.3 and have discovered that there is no zero
>> defined for the Date or DateTime types. Is this intentional?
>>
>>
>>
>
