[datatable-help] internal FALSE/TRUE value has been modified

[Matthew Dowle]

Yup - upgrade to v1.9.3

Consequences of ignoring the warning may be severe and R itself has now 
changed from warning to error.

 From README.md :

The warning "internal TRUE value has been modified" with recently 
released R 3.1 when grouping a table containing a logical column and 
where all groups are just 1 row is now fixed and tests added. Thanks to 
James Sams for the reproducible example. The warning is issued by R and 
we have asked if it can be upgraded to error (UPDATE: change now made 
for R 3.1.1 thanks to Luke Tierney).

Matt


On 04.07.2014 12:36, Juan Manuel Truppia wrote:
> Hi, I've read the previous thread on this issue (May 1).
> I'm on R 3.1 and data.table 1.9.2 and I'm getting this issue.
> Is this expected on this environment? The only way to avoid it is to
> upgrade to 1.9.3 in github? What are the consequences of ignoring the
> warning?
>
> Regards
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