Returns first non-missing, non-null argument.
Returns first non-missing, non-null argument, otherwise NULL.
We have to perform some pretty weird tryCatch stuff internally,
so you should better not pass complex function calls into the arguments that can throw exceptions,
as these will be completely muffled, and return NULL in the end.
coalesce(...)
... |
[any] |
[any].
f = function(x,y) {
print(coalesce(NULL, x, y))
}
f(y = 3)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.