R/golem_utils_server.R

Defines functions drop_nulls

#' Inverted versions of in, is.null and is.na
#' 
#' @noRd
#' 
#' @examples
#' 1 %not_in% 1:10
#' not_null(NULL)
`%not_in%` <- Negate(`%in%`)

not_null <- Negate(is.null)

not_na <- Negate(is.na)

#' Removes the null from a vector
#' 
#' @noRd
#' 
#' @example 
#' drop_nulls(list(1, NULL, 2))
drop_nulls <- function(x){
  x[!sapply(x, is.null)]
}

#' If x is `NULL`, return y, otherwise return x
#' 
#' @param x,y Two elements to test, one potentially `NULL`
#' 
#' @noRd
#' 
#' @examples
#' NULL %||% 1
"%||%" <- function(x, y){
  if (is.null(x)) {
    y
  } else {
    x
  }
}

#' If x is `NA`, return y, otherwise return x
#' 
#' @param x,y Two elements to test, one potentially `NA`
#' 
#' @noRd
#' 
#' @examples
#' NA %||% 1
"%|NA|%" <- function(x, y){
  if (is.na(x)) {
    y
  } else {
    x
  }
}

#' Typing reactiveValues is too long
#' 
#' @inheritParams reactiveValues
#' @inheritParams reactiveValuesToList
#' 
#' @noRd
rv <- shiny::reactiveValues
rvtl <- shiny::reactiveValuesToList
parmsam/npiShiny documentation built on April 24, 2022, 5:41 a.m.