#' @include callbacks.R
NULL
#' Interrupt callback
#'
#' Adds a handler that allows interrupting the training loop using `ctrl + C`.
#' Also registers a `on_interrupt` breakpoint so users can register callbacks to
#' be run on training loop interruption.
#'
#' @note In general you don't need to use these callback by yourself because it's always
#' included by default in [fit.luz_module_generator()].
#'
#' @examples
#' interrupt_callback <- luz_callback_interrupt()
#'
#' @returns
#' A `luz_callback`
#'
#' @family luz_callbacks
#' @export
luz_callback_interrupt <- luz_callback(
"interrupt_callback",
on_fit_begin = function() {
ctx$handlers <- append(ctx$handlers, list(
interrupt = function(err) {
ctx$call_callbacks("on_interrupt")
invisible(NULL)
}
))
}
)
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