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instance method

Kernel#at_exit

() { () -> void } -> ::Proc

at_exit { block } → proc

static VALUE
rb_f_at_exit(VALUE _)
{
    VALUE proc;

    if (!rb_block_given_p()) {
        rb_raise(rb_eArgError, "called without a block");
    }
    rb_ractor_ensure_main_ractor("can not call at_exit from non-main Ractors");
    proc = rb_block_proc();
    rb_set_end_proc(rb_call_end_proc, proc);
    return proc;
}

Converts block to a Proc object (and therefore binds it at the point of call) and registers it for execution when the program exits. If multiple handlers are registered, they are executed in reverse order of registration.

Example

def do_at_exit(str1)
  at_exit { print str1 }
end
at_exit { puts "cruel world" }
do_at_exit("goodbye ")
exit

produces:

Example

goodbye cruel world

See also #Array #autoload #abort #autoload? also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0

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