R/check-scalar-hasValidNames.R
check-scalar-hasValidNames.Rd
Does the input object have syntactically valid names?
hasValidNames(x, .xname = getNameInParent(x)) hasValidDimnames(x, .xname = getNameInParent(x))
x | Object. |
---|---|
.xname | Name of object defined in |
TRUE
on success;
FALSE
on failure, with cause set.
Updated 2019-08-10.
#> [1] "a" "b"hasValidNames(x)#> [1] TRUE#> [[1]] #> [1] "1" "2" "3" "4" "5" "6" #> #> [[2]] #> [1] "Sepal.Length" "Sepal.Width" "Petal.Length" "Petal.Width" "Species" #>hasValidDimnames(x)#> [1] TRUE## FALSE ==== x <- list( "1" = 1, # can't start with number "foo bar" = 2, # no spaces "foo-bar" = 3 # no hyphens ) print(x)#> $`1` #> [1] 1 #> #> $`foo bar` #> [1] 2 #> #> $`foo-bar` #> [1] 3 #>hasValidNames(x)#> [1] FALSE #> Cause: 'x' does not contain valid names: [1] 1, [2] foo bar, [3] foo-bar #> See 'make.names()' for details.#> [[1]] #> [1] "Mazda RX4" "Mazda RX4 Wag" "Datsun 710" #> [4] "Hornet 4 Drive" "Hornet Sportabout" "Valiant" #> #> [[2]] #> [1] "mpg" "cyl" "disp" "hp" "drat" "wt" #>hasValidDimnames(x)#> [1] FALSE #> Cause: 'x' does not contain valid names: [1] Mazda RX4, [2] Mazda RX4 Wag, [3] Datsun 710, [4] Hornet 4 Drive, [5] Hornet Sportabout, [7].... #> See 'make.names()' for details.