combine_words

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Combine multiple words into a single string

When a value from an inline R expression is a character vector of multiple elements, we may want to combine them into a phrase like a and b, or a, b, and c. That is what this a helper function does.

Usage
combine_words(words, sep = ", ", and = " and ", before = "", after = before)
Arguments
words

a character vector

sep

the separator to be inserted among words

and

a character string to be prepended to the last word

before, after

A character string to be added before/after each word

Details

If the length of the input words is smaller than or equal to 1, words is returned. When words is of length 2, the first word and second word are combined using the and string. When the length is greater than 2, sep is used to separate all words, and the and string is prepended to the last word.

Value

A character string.

Aliases
  • combine_words
Examples
# NOT RUN {
combine_words("a")
combine_words(c("a", "b"))
combine_words(c("a", "b", "c"))
combine_words(c("a", "b", "c"), sep = " / ", and = "")
combine_words(c("a", "b", "c"), and = "")
combine_words(c("a", "b", "c"), before = "\"", after = "\"")
# }
Documentation reproduced from package knitr, version 1.16, License: GPL

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