R: Concatenate Strings

paste {base} | R Documentation

## Concatenate Strings

### Description

Concatenate vectors after converting to character.

### Usage

    paste(..., sep = " ", collapse = NULL)

### Arguments

`...` | one or more R objects, to be coerced to character vectors.
`sep` | a character string to separate the terms.
`collapse` | an optional character string to separate the results.

### Details

`paste` converts its arguments to character strings, and concatenates them (separating them by the string given by `sep`). If the arguments are vectors, they are concatenated term-by-term to give a character vector result.

If a value is specified for `collapse`, the values in the result are then concatenated into a single string, with the elements being separated by the value of `collapse`.

### Value

A character vector of the concatenated values. This will be of length zero if all the objects are, unless `collapse` is non-NULL, in which case it is a single empty string.

### References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

### See Also

String manipulation with `as.character`, `substr`, `nchar`, `strsplit`; further, `cat` which concatenates and writes to a file, and `sprintf` for C like string construction.

### Examples

    paste(1:12) # same as as.character(1:12)
    paste("A", 1:6, sep = "")
    paste("Today is", date())

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