I noticed this:

================================
> J
function (...)
{
    warning("The J alias is deprecated *outside* DT[...] because J() conflicts 
with the function J() in XLConnect and rJava. Please use data.table() instead, 
or define an alias yourself. J() will continue to work *inside* DT[...] as 
documented. This warning is issued from v1.8.3. J() will be unavailable for use 
outside DT[...] from v1.8.4. Only then will the conflict with rJava and 
XLConnect be resolved.")
    data.table(...)
}
<bytecode: 0x00000000148580e8>
<environment: namespace:data.table>

> packageVersion('data.table')
[1] '1.8.6'
================================

Is it time to remove it?


--
Ken Williams, Senior Research Scientist
WindLogics
http://windlogics.com


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