lazy.qh

Go to the documentation of this file.

#pragma once
 
#include "oo.qh"
 
CLASS(Lazy, Object)
    ATTRIB(Lazy, m_get, entity());
    CONSTRUCTOR(Lazy, entity() _compute)
    {
        this.m_get = _compute;
    }
ENDCLASS(Lazy)
 
#define LAZY(id) __lazy_##id
#define LAZY_NEW(id, compute) \
    entity LAZY(id)() { \
        static bool done; \
        static entity it; \
        if (!done) { it = compute; done = true; } \
        return it; \
    }