affix: Quote, Bracket, and Prefix/Suffix String Manipulation
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affix

R Documentation

Quote, Bracket, and Prefix/Suffix String Manipulation

Description

A set of helper functions for adding or removing specific prefixes and/or suffixes to character vectors. This is useful for formatting strings in mathematical, XML, or other structured text contexts.

affix() – Add any prefix and/or suffix to each element of a character vector; alias: add_affix().
math() – Add a dollar sign ($) to both ends of each element (LaTeX-style math); aliases: add_math(), lmath().
bracket() – Wrap each element in parentheses; aliases: add_bracket(), brkt().
cdata() – Wrap each element in ⁠<![CDATA[ ... ]]>⁠ (XML CDATA section); alias: add_cdata().
unaffix() – Remove a given prefix and/or suffix from each element; alias: remove_affix().
unquote() – Remove surrounding double quotes from each element; alias: remove_quotes().
uncdata() – Remove a surrounding CDATA section from each element.; alias: remove_cdata().

Usage

affix(txt, prefix = "", suffix = "")

math(txt)

bracket(txt)

unaffix(txt, prefix = "", suffix = "")

unquote(txt)

uncdata(txt)

cdata(txt)

add_affix(txt, prefix = "", suffix = "")

add_cdata(txt)

add_math(txt)

lmath(txt)

add_bracket(txt)

brkt(txt)

remove_affix(txt, prefix = "", suffix = "")

remove_quotes(txt)

remove_cdata(txt)

Arguments

`txt`	`character` vector to modify.
`prefix`	`character(1)` Prefix to add or remove. Default is `""`.
`suffix`	`character(1)` Suffix to add or remove. Default is `""`.

Value

A modified character vector of the same length as txt.

Examples

x <- c("alpha", "beta", "gamma")

# Add a prefix and suffix
affix(x, "[", "]")
#> [1] "[alpha]" "[beta]" "[gamma]"

# Wrap with LaTeX math delimiters
math(x)
#> [1] "$alpha$" "$beta$" "$gamma$"

# Remove quotes
quoted <- c('"a"', '"b"')
unquote(quoted)
#> [1] "a" "b"

# Wrap and unwrap CDATA
cdata_x <- cdata("text")
uncdata(cdata_x)

exams.forge documentation built on Aug. 21, 2025, 5:41 p.m.