#include "ruby.h" extern VALUE rb_hash_delete_entry(VALUE hash, VALUE key); static VALUE hash_delete(VALUE hash, VALUE key) { VALUE ret = rb_hash_delete_entry(hash, key); return ret == Qundef ? Qnil : rb_ary_new_from_values(1, &ret); } void Init_delete(VALUE klass) { rb_define_method(klass, "delete!", hash_delete, 1); }