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What is the assign() function in R?

Onyejiaku Theophilus Chidalu

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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Overview

The assign() function in R is simply used to assign a value to a name in an environment.

Syntax

assign(x, value, pos = -1, envir = as.environment(pos),
       inherits = FALSE, immediate = TRUE)

Required parameter values

The assign() function takes the following mandatory parameter values:

  • x: This represents the variable name that is given as a character string.
  • value: This is the value to be assigned to the x variable.

Optional parameter values

The assign() function takes the following optional parameter values:

  • pos: This represents where to do the assignment. By default, it is done in the current environment.
  • envir: This represents the environment.
  • inherits: This is used in case the enclosing frames of the environment need to be inspected or not.
  • immediate: This is an ignored compatibility feature.

Code example

# using the assign() function
assign('x', 'Theo')
x
# using the assign() function
assign(x, 42)
Theo
Implementing the assign() function

Code explanation

  • Line 2: We use the assign() function to assign the value "Theo" to the variable name x.
  • Line 6: We use the assign() function to assign the value 42 to the variable x, which is already the same as Theo in the environment.
  • Line 7: We print the variable Theo.

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function
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CONTRIBUTOR

Onyejiaku Theophilus Chidalu

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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