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enum() is creating a vector of integers to enumarate items in an object. It is particularly useful in the for(i in enum(object)) construct.
enum()
for(i in enum(object))
enum(x)
Any object.
seq_along()
# NOT RUN { enum(letters) enum(numeric(0)) # Compare with: 1:length(numeric(0)) enum(NULL) letters5 <- letters[1:5] for (i in enum(letters5)) cat("letter", i, "=", letters5[i], "\n") # }
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