r2rtf (version 0.2.0)

match_arg: Argument Verification Using Partial Matching

Description

Similar to match.arg(), match_arg matches arg against a table of candidate values as specified by choices.

Usage

match_arg(arg, choices, several.ok = FALSE)

Arguments

arg

a character vector (of length one unless several.ok is TRUE) or NULL.

choices

a character vector of candidate values

several.ok

logical specifying if arg should be allowed to have more than one element.

Value

The matched elements of arg or in case of match failure a detailed error message

Specification

The contents of this section are shown in PDF user manual only.

Details

This function resolves errors from match.arg() with '' as arg input.

Examples

# NOT RUN {
match_arg(arg = c(2, 1), choices = c(4, 3, 1, 2), several.ok = TRUE)
match_arg(arg = c("c", "b"), choices = c("a", "b", "c", "d"), several.ok = TRUE)
# }
# NOT RUN {
# }