c++ - Overriding operator -

anybody me constructor overriding..

i have

void  operator delete(void*) {}  void  operator delete(void* p, void*) {} 

in class.. looks overloading(same function name , return type different parameter list) overriding .. how overriding..

anyone explain me these 2 lines function.

void  operator delete(void*) {} void  operator delete(void* p, void*) {} 

these custom deallocation functions. deallocation function called via deleteexpression. e.g.

yourclass* p = new yourclass();    // allocates memory & calls constructor // ... whatever, delete p;                          // calls destructor & deallocates memory 

for class delete expression in last line above first call destructor, , call single void* argument deallocation function class defines, first of 2 functions, if deallocation accessible.

however, might deallocation function declared private or protected, purpose of making inaccessible. in first case delete expression outside class' own code won't compile (inaccessible deallocation function). , if may whole point -- or, don't surprised if there's no point @ all.

by way, have @ this tutorial. it's apparently least bad free introduction c++ on net. bruce eckel's e-book "thinking in c++" free, has errors , misinformation (it used other way around though, tutorial @ cplusplus.com used bad, once).

cheers & hth.,