Validate that no empty string is present

Validate that no empty string is present

Usage

hasEmptyStrings(x)

validateHasOnlyNonEmptyStrings(x)

Arguments

x

A character string or a vector of character strings.

Value

• hasEmptyStrings() returns TRUE if any of the strings are empty; FALSE otherwise.

• validateHasOnlyNonEmptyStrings() produces an error if empty string are present. It returns NULL otherwise.

Details

If any of the following conditions are met, the input string is considered empty:

• if any NAs are present (e.g. x = c("a", "abc", NA))

• if string is empty (e.g. x = list("a", "abc", ""))

• if length is 0 (e.g. x = character())

Examples

hasEmptyStrings(c("x", "y")) # FALSE
#> [1] FALSE
hasEmptyStrings(list("x", "y")) # FALSE
#> [1] FALSE
hasEmptyStrings("   abc   ") # FALSE
#> [1] FALSE
hasEmptyStrings(c("", "y")) # TRUE
#> [1] TRUE
hasEmptyStrings(list("", "y")) # TRUE
#> [1] TRUE
hasEmptyStrings(NA) # TRUE
#> [1] TRUE
hasEmptyStrings(character(0)) # TRUE
#> [1] TRUE
hasEmptyStrings(c(NA, "x", "y")) # TRUE
#> [1] TRUE

validateHasOnlyNonEmptyStrings(c("x", "y")) # NULL
validateHasOnlyNonEmptyStrings(list("x", "y")) # NULL
validateHasOnlyNonEmptyStrings("   abc   ") # NULL
# validateHasOnlyNonEmptyStrings(c("", "y")) # error
# validateHasOnlyNonEmptyStrings(list("", "y")) # error
# validateHasOnlyNonEmptyStrings(NA) # error
# validateHasOnlyNonEmptyStrings(character(0)) # error
# validateHasOnlyNonEmptyStrings(c(NA, "x", "y")) # error