R/golem_utils_server.R

In Guillaume-Lombardo/prenom: prenom

#' 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 `NULL` or '' or length 0, 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) || length(x) == 0 || max(nchar(x)) == 0) {
    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

#' Typing formatC is too long
#'
#' @param .x a vector to format
#' @param  .w a width (an integer)
#' @param  .f a flag (a character to pad with)
#'
#' @noRd
fc <- function(.x, .w = 2, .f = '0') {
  formatC(.x, width = .w, flag = .f)
}