Description Usage Arguments Details See Also Examples
chk_null_if_null
checks that x1
is NULL
,
given that x2
is NULL
.
1 2 3 4 5 6 7 8 9 10 11 | chk_null_if_null(x1, x2, name1, name2)
chk_null_onlyif_null(x1, x2, name1, name2)
chk_null_ifonlyif_null(x1, x2, name1, name2)
err_null_if_null(x1, x2, name1, name2)
err_null_onlyif_null(x1, x2, name1, name2)
err_null_ifonlyif_null(x1, x2, name1, name2)
|
x1 |
An argument that could be |
x2 |
An argument that could be |
name1 |
The name for |
name2 |
The name for |
chk_null_onlyif_null
checks that x1
is only
NULL
when x2
is NULL
.
chk_null_ifonlyif_null
checks that x1
and
x2
are both NULL
or are both non-NULL
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | x1 <- NULL
x2 <- 2
chk_null_if_null(x1 = x1, x2 = x2, name1 = "x1", name2 = "x2")
x1 <- NULL
x2 <- NULL
chk_null_if_null(x1 = x1, x2 = x2, name1 = "x1", name2 = "x2")
x1 <- 1
x2 <- NULL
chk_null_onlyif_null(x1 = x1, x2 = x2, name1 = "x1", name2 = "x2")
x1 <- NULL
x2 <- NULL
chk_null_onlyif_null(x1 = x1, x2 = x2, name1 = "x1", name2 = "x2")
x1 <- 1
x2 <- 2
chk_null_ifonlyif_null(x1 = x1, x2 = x2, name1 = "x1", name2 = "x2")
x1 <- NULL
x2 <- NULL
chk_null_ifonlyif_null(x1 = x1, x2 = x2, name1 = "x1", name2 = "x2")
|
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