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I have written code to compute multi-indices in R [1] and due to the recursive nature of the computation I need to pass around the *same* matrix object (where each row corresponds to one multi-index). As pass by reference wasn't the default behavior I declared a global matrix (mat) and used the <<- operator to write to the global matrix. So the usage would be to call genMultiIndices(3,2)

...two separate lines, but i don't think it's possible. To give a specific example, instead of dput output like **new("big.matrix.descriptor" , description = structure(list(sharedType = "FileBacked", filename = "res", totalRows = 1528, totalCols = 53040, rowOffset = c(0, 1528), colOffset = c(0, 53040), nrow = 1528, ncol = 53040, rowNames = c("A", "AA", "RNT.A", "ADVA", "AAPL", "AAS", "ABFS", "ABM", "ABT", "ACI", ....... I'd prefer ideally to h...