[Rd] Dependency problem for "hasArg"

[Charlie Friedemann]

The error message you are getting makes it rather clear what the problem is. 
R is unable to find the function 'hasArg'.  As the hasArg function is part
of the package 'methods', a solution would be to put require(methods) at the
beginning of your script.

For whatever reason, loading R via Rscript does not load the base package
"methods" whereas loading the R console does. I'm not entirely sure why this
is the case, and I'm sure someone who knows more about the differences
between the two could chime in here.

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