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The cat0 function is to cat what paste0 is to paste; it simply makes concatenating many strings without a separator easier.
cat0(..., sep = "")
Nothing (invisible NULL, like cat).
NULL
The character vector(s) to print; passed to cat.
The separator to pass to cat, of course, "" by default.
""
cat0("The first variable is '", names(mtcars)[1], "'.");
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