Nothing
# Inverted versions of in, is.null and is.na
`%not_in%` <- Negate(`%in%`)
not_null <- Negate(is.null)
not_na <- Negate(is.na)
# Removes the null from a vector
drop_nulls <- function(x){
x[!sapply(x, is.null)]
}
# If x is null, return y, otherwise return x
"%||%" <- function(x, y){
if (is.null(x)) {
y
} else {
x
}
}
# If x is NA, return y, otherwise return x
"%|NA|%" <- function(x, y){
if (is.na(x)) {
y
} else {
x
}
}
# typing reactiveValues is too long
rv <- shiny::reactiveValues
rvtl <- shiny::reactiveValuesToList
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