MplusAutomation: isEmpty – R documentation

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isEmpty

Check whether a useable function argument was provided

Description

This is a simple utility to check whether a function argument is missing, NULL, or has only NAs.

Usage

isEmpty(arg)

Arguments

arg

A function argument

Value

Logical vector of length 1.

Examples

## Not run: 
f1 <- function(x) {
  if (!isEmpty(x)) return(mean(x, na.rm = TRUE))
  return(NULL)
}

f1()                 #> NULL
f1(x = NA)           #> NULL
f1(x = NULL)         #> NULL
f1(x = c(NA, 1:2))   #> 1.5

## End(Not run)

MplusAutomation

An R Package for Facilitating Large-Scale Latent Variable Analyses in Mplus

v0.8

LGPL-3

Authors

Michael Hallquist [aut, cre], Joshua Wiley [aut], Caspar van Lissa [ctb], Daniel Morillo [ctb]

Initial release

2020-09-28