string: Create a string

In hadley/rlang: Functions for Base Types and Core R and 'Tidyverse' Features

Create a string

Description

These base-type constructors allow more control over the creation of strings in R. They take character vectors or string-like objects (integerish or raw vectors), and optionally set the encoding. The string version checks that the input contains a scalar string.

Usage

string(x, encoding = NULL)

Arguments

x	A character vector or a vector or list of string-like objects.
encoding	If non-null, set an encoding mark. This is only declarative, no encoding conversion is performed.

Examples

# As everywhere in R, you can specify a string with Unicode
# escapes. The characters corresponding to Unicode codepoints will
# be encoded in UTF-8, and the string will be marked as UTF-8
# automatically:
cafe <- string("caf\uE9")
Encoding(cafe)
charToRaw(cafe)

# In addition, string() provides useful conversions to let
# programmers control how the string is represented in memory. For
# encodings other than UTF-8, you'll need to supply the bytes in
# hexadecimal form. If it is a latin1 encoding, you can mark the
# string explicitly:
cafe_latin1 <- string(c(0x63, 0x61, 0x66, 0xE9), "latin1")
Encoding(cafe_latin1)
charToRaw(cafe_latin1)

hadley/rlang documentation built on Dec. 17, 2024, 3:26 a.m.