powered by
Checks if non-missing logical scalar using
is.logical(x) && length(x) == 1L && !anyNA(x)
Pass: TRUE, FALSE.
TRUE
FALSE
Fail: logical(0), c(TRUE, TRUE), "TRUE", 1, NA.
logical(0)
c(TRUE, TRUE)
"TRUE"
1
NA
chk_flag(x, x_name = NULL)vld_flag(x)
vld_flag(x)
The chk_ function throws an informative error if the test fails or returns the original object if successful so it can used in pipes.
chk_
The vld_ function returns a flag indicating whether the test was met.
vld_
The object to check.
A string of the name of object x or NULL.
vld_flag(): Validate Flag
vld_flag()
Other chk_logical: chk_false(), chk_lgl(), chk_true()
chk_false()
chk_lgl()
chk_true()
# chk_flag chk_flag(TRUE) try(vld_flag(1)) # vld_flag vld_flag(TRUE) vld_flag(1)
Run the code above in your browser using DataLab