first_valid_value {preregr} | R Documentation |
From a vector or list of values, select the first valid value, valid being defined as a value that is not NULL or NA and has, after being trimmed of whitespace, a nonzero length. Optionally, only look at the element with a given name.
first_valid_value(x, selectName = NULL)
x |
The vector or list. |
selectName |
Optionally, the name to look at. |
The first valid value (or NULL).