1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
\name{str_c}
\alias{str_c}
\alias{str_join}
\title{Join multiple strings into a single string.}
\usage{
str_c(..., sep = "", collapse = NULL)
}
\arguments{
\item{...}{one or more character vectors. Zero length
arguments are removed}
\item{sep}{string to insert between input vectors}
\item{collapse}{optional string used to combine input
vectors into single string}
}
\value{
If \code{collapse = NULL} (the default) a character
vector with length equal to the longest input string. If
\code{collapse} is non- NULL, a character vector of
length 1.
}
\description{
To understand how \code{str_c} works, you need to imagine
that you are building up a matrix of strings. Each input
argument forms a column, and is expanded to the length of
the longest argument, using the usual recyling rules.
The \code{sep} string is inserted between each column. If
collapse is \code{NULL} each row is collapsed into a
single string. If non-\code{NULL} that string is
inserted at the end of each row, and the entire matrix
collapsed to a single string.
}
\examples{
str_c("Letter: ", letters)
str_c("Letter", letters, sep = ": ")
str_c(letters, " is for", "...")
str_c(letters[-26], " comes before ", letters[-1])
str_c(letters, collapse = "")
str_c(letters, collapse = ", ")
}
\seealso{
\code{\link{paste}} which this function wraps
}
\keyword{character}
|
