:sig
void DValue::push(const DValue& child)

:params
child : value to append/copy
return value : none

:see
0_DValue
2_DValue_pop
2_DValue_set_array

:content
Appends a child under the next numeric key. Empty values become list-shaped. Existing contiguous lists continue at their size; non-list maps use the next unused numeric key and remain non-list.


:example
DValue list;
list.set_array();
DValue a; a.set("x"); list.push(a);
DValue b; b.set("y"); list.push(b);
print("count: ", list.keys().size(), "\n");