Check Character Scalar

Checks if character scalar using

is.character(x) && length(x) == 1L

Usage

chk_chr(x, x_name = NULL)

vld_chr(x)

Arguments

x

The object to check.

x_name

A string of the name of object x or NULL.

Value

The chk_ function throws an informative error if the test fails or returns the original object if successful so it can used in pipes.

The vld_ function returns a flag indicating whether the test was met.

Functions

• vld_chr(): Validate Character Scalar

  

See also

Other deprecated: chk_dbl(), chk_deprecated, chk_wnum()

Examples

chk_chr("a")
try(chk_chr(1))
#> Warning: `chk_chr()` was deprecated in chk 0.6.1.
#> ℹ Please use `chk::chk_scalar(x);` `chk::chk_character(x)` instead
#> Error in eval(expr, envir, enclos) : `1` must be a character scalar.
# vld_chr
vld_chr("")
#> [1] TRUE
vld_chr("a")
#> [1] TRUE
vld_chr(NA_character_)
#> [1] TRUE
vld_chr(c("a", "b"))
#> [1] FALSE
vld_chr(1)
#> [1] FALSE