Inserts the given values before the element with the given index (which may be negative).
a=%w{ a b c d }a.insert(2,99)#=> ["a", "b", 99, "c", "d"]a.insert(-2,1,2,3)#=> ["a", "b", 99, "c", 1, 2, 3, "d"]
/*
* call-seq:
* array.insert(index, obj...) -> array
*
* Inserts the given values before the element with the given index
* (which may be negative).
*
* a = %w{ a b c d }
* a.insert(2, 99) #=> ["a", "b", 99, "c", "d"]
* a.insert(-2, 1, 2, 3) #=> ["a", "b", 99, "c", 1, 2, 3, "d"]
*/
static VALUE
rb_ary_insert(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
long pos;
if (argc == 1) return ary;
if (argc < 1) {
rb_raise(rb_eArgError, "wrong number of arguments (at least 1)");
}
pos = NUM2LONG(argv[0]);
if (pos == -1) {
pos = RARRAY(ary)->len;
}
if (pos < 0) {
pos++;
}
rb_ary_splice(ary, pos, 0, rb_ary_new4(argc - 1, argv + 1));
return ary;
}