After padding is removed, could the input string be considered to be numeric, i.e. could it be coerced to numeric. This function is vectorized over its one argument.
str_can_be_numeric(string)
A character vector.
A logical vector.
# NOT RUN { str_can_be_numeric("3") str_can_be_numeric("5 ") str_can_be_numeric(c("1a", "abc")) # }
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