bquote

From base v3.5.1 by R-core R-core@R-project.org

Partial substitution in expressions

An analogue of the LISP backquote macro. bquote quotes its argument except that terms wrapped in .() are evaluated in the specified where environment.

Keywords: programming, data

Usage

bquote(expr, where = parent.frame())

Arguments

expr: A language object.
where: An environment.

Value

A language object.

Examples

library(base)

# NOT RUN {
require(graphics)

a <- 2

bquote(a == a)
quote(a == a)

bquote(a == .(a))
substitute(a == A, list(A = a))

plot(1:10, a*(1:10), main = bquote(a == .(a)))

## to set a function default arg
default <- 1
bquote( function(x, y = .(default)) x+y )
# }

Documentation reproduced from package base, version 3.5.1, License: Part of R 3.5.1

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