Nothing
#-------------------------------------------------------------------------------
value_between <- function(x, lower, upper) {
x >= lower && x <= upper
}
assertthat::on_failure(value_between) <- function(call, env) {
paste0(
deparse(call$x),
" is not between ",
deparse(call$lower),
" and ",
deparse(call$upper)
)
}
#-------------------------------------------------------------------------------
both_specified <- function(x, y) {
x != 1 && y != 1
}
#-------------------------------------------------------------------------------
length_between <- function(x, lower, upper) {
length(x) >= lower && length(x) <= upper
}
assertthat::on_failure(length_between) <- function(call, env) {
paste0(
"Length of ",
deparse(call$x),
" is not between ",
deparse(call$lower),
" and ",
deparse(call$upper)
)
}
#-------------------------------------------------------------------------------
n_characters_between <- function(x, lower, upper) {
nchar(x) >= lower && nchar(x) <= upper
}
assertthat::on_failure(n_characters_between) <- function(call, env) {
paste0(
"Number of characters of ",
deparse(call$x),
" is not between ",
deparse(call$lower),
" and ",
deparse(call$upper)
)
}
#-------------------------------------------------------------------------------
is_false <- function(x) {
!x
}
assertthat::on_failure(is_false) <- function(call, env) {
paste0(deparse(call$x), " is not yet implemented.")
}
#-------------------------------------------------------------------------------
is_null <- function(x) {
is.null(x)
}
assertthat::on_failure(is_null) <- function(call, env) {
paste0(deparse(call$x), " is not yet implemented.")
}
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