On Wed, Jun 2, 2010 at 9:55 AM, 徐持恒 <chiheng...@gmail.com> wrote: > On Wed, Jun 2, 2010 at 8:38 AM, DJ Delorie <d...@redhat.com> wrote: >> >> "Hargett, Matt" <matt.harg...@bluecoat.com> writes: >>>> As noted earlier I think we do want to use some STL classes. >>> >>> I agree with Mark's earlier declaration that it is relatively >>> straight-forward, low-hanging fruit to replace VEC_* >> >> I do not object to simple and obvious uses of STL to replace equivalent >> functionality, but I've seen code that layers STL over STL over STL to >> the point where the code is very difficult to understand. Hence, my >> recommendation to avoid STL *at first*. It teaches caution against >> over-abstracting and arbitrary complexity. >> > > STL is good, but may surplus what GCC really needs, and will introduce > many complex, "uncontrollable" C++ features. > > > Personally, I think what GCC need most is an simple, generic, one > layer containers of pointers to objects, with their iterators. > Instead of containers of arbitrary types. That means the type > parameters of the standard templates is restricted to pointer to > objects. > > > If you can't refrain from using STL and don't like the mess it may > introduce, you can derive classes from instantiated standard templates > with pointer as type parameters, and use the derived, template-free > classes in rest of your code. >
The complexity of compiler determined that , in compiler, Java style C/C++ code may be unavoidable. In Java language, there are only two kinks of types, primitive types and reference types. When translated to C/C++, reference type are converted to pointer(to object) types. So, In a C/C++ program, if you only use primitive types and pointer(to object) types, I will call it Java style C/C++ code. You can use Java language to write arbitrary complex programs ? It may be true you can use Java style C/C++ code to write compiler, with some garbage collection mechanism, of course. But C/C++ may have an another advantage, it can use ADT(Abstract Data Type) to extend its set of "primitive type", e.g., string. -- 徐持恒(Chiheng Xu) Wuhan,China
