missing_x_msg | R Documentation |
(Internal) If the x argument does not exist for match_on, fullmatch, or pairmatch, use this function to print a helpful message.
missing_x_msg(x_str, data_str, ...)
x_str |
x as a string of code, usually deparse(substitute(x)) |
data_str |
data arg as string of code |
... |
will look for 'z = <stuff>' in the extra args of caller |
string a helpful error message
Josh Buckner
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