Nothing

```
.process_batch <- function(LHS, RHS, attributes, rules, verbose = TRUE) {
if (requireNamespace("tictoc", quietly = TRUE)) {
timing <- TRUE
} else {
timing <- FALSE
}
# Initialize results
new_LHS <- Matrix::Matrix(0,
nrow = nrow(LHS),
ncol = 1,
sparse = TRUE)
new_RHS <- Matrix::Matrix(0,
nrow = nrow(LHS),
ncol = 1,
sparse = TRUE)
# Look up the equivalence rules in the registry
methods <- lapply(rules,
equivalencesRegistry$get_entry)
methods[sapply(methods, is.null)] <- NULL
# Begin the timing
if (timing) tictoc::tic("batch")
if (verbose) {
message("Processing batch\n")#, i, "out of", length(idx) - 1, "\n")
}
old_LHS <- LHS
old_RHS <- RHS
new_cols <- ncol(LHS)
# Loop over all functions
for (j in seq_along(methods)) {
current_cols <- new_cols
current_rule <- methods[[j]]$fun
if (timing) tictoc::tic("rule")
L <- current_rule(old_LHS, old_RHS, attributes)
if (timing) rule_time <- tictoc::toc(quiet = TRUE)
old_LHS <- L$lhs
old_RHS <- L$rhs
new_cols <- ncol(old_LHS)
if (verbose) {
if (timing) {
message("--> ", methods[[j]]$method[1], ": from ", current_cols, " to ",
new_cols, " in ", round(rule_time$toc - rule_time$tic, 3),
" secs.")
} else {
message("--> ", methods[[j]]$method[1], ": from ", current_cols, " to ",
new_cols, ".")
}
}
}
# Add the computed implications to the set
new_LHS <- cbind(new_LHS, old_LHS)
new_RHS <- cbind(new_RHS, old_RHS)
L <- .clean(new_LHS, new_RHS)
if (timing) batch_toc <- tictoc::toc(quiet = TRUE)
if (verbose && timing) {
message("Batch took ", round(batch_toc$toc - batch_toc$tic, 3),
" secs. \n")
}
return(list(lhs = L$lhs, rhs = L$rhs))
}
```

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