assertive (version 0.2-6)

assert_has_colnames: Does the input have names?

Description

Checks to see if the input has (row/column/dimension) names.

Usage

assert_has_colnames(x)

assert_has_dimnames(x)

assert_has_names(x)

assert_has_rownames(x)

has_colnames(x, .xname = get_name_in_parent(x))

has_dimnames(x, .xname = get_name_in_parent(x))

has_names(x, .xname = get_name_in_parent(x))

has_rownames(x, .xname = get_name_in_parent(x))

Arguments

x

Input to check.

.xname

Not intended to be used directly.

Value

• has_names returns TRUE if names is non-null. has_rownames, has_colnames and has_dimnames work in a similar fashion, checking the corresponding attributes. assert_has_names returns nothing but throws an error if has_names is not TRUE.

See Also

names, rownames, colnames, dimnames.

Examples

assert_has_names(c(a = 1, 2))
dfr <- data.frame(x = 1:5)
assert_has_rownames(dfr)
assert_has_colnames(dfr)
assert_has_dimnames(dfr)