1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
# patterns coerced to character
Code
. <- regex(x)
Condition
Warning in `regex()`:
Coercing `pattern` to a plain character vector.
Code
. <- coll(x)
Condition
Warning in `coll()`:
Coercing `pattern` to a plain character vector.
Code
. <- fixed(x)
Condition
Warning in `fixed()`:
Coercing `pattern` to a plain character vector.
# useful error message for bad type
Code
type(1:3)
Condition
Error:
! `pattern` must be a character vector, not an integer vector.
# useful errors for NAs
Code
type(NA)
Condition
Error:
! `pattern` must be a character vector, not `NA`.
Code
type(c("a", "b", NA_character_, "c"))
Condition
Error:
! `pattern` can not contain NAs.
|
