d: Convert expressions to Datalog
In ParkerICI/datalogr: Interacting with a Datomic database via R

This function converts R expressions to Datalog. The following rules apply when converting expressions to Datalog:

Infix operators are converted to prefix
Function calls are converted to S-expressions (e.g. max(v) is converted to (max v))
The . symbol is converted to _
String containing the / character are assumed to represent qualified symbol names and are converted by pre-prending the : character
Names prefixed with !! are assumed to represent R symbols and are substituted with their bound value

Note the following:

This function only performs syntax conversion and does not check the correctness of the resulting expressions
For the same reason, even though you may use function names that exist in R (e.g. max), this function is not actually invoking the corresponding R function at all, therefore you should not assume that you can pass it the same arguments that you would in R. For instance the expression max(v, is.na = TRUE) would make no sense since the R max function is not invoked at any point during the conversion process