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Re: Java vs C++

Followups directed to: comp.lang.java.programmer

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In message <iil9uk$b6m$1@news.eternal-september.org>, Joshua Cranmer wrote:

> On 02/05/2011 11:13 PM, Lawrence D'Oliveiro wrote:
>
>> They are different things in Java as well.
> 
> The hell they aren't. In Java, there is only one instance of
> LinkedList::add(T object). In C++, there are as many instances of
> std::list<T>::front as times you use it.
> 
> Try, for example, implementing both List<String> and List<Character> in
> the same class. Java will tell you that you cannot do it. C++, on the
> other hand, wouldn't bat an eye.
> 
>> The only time they become the same thing is in “erasures” and “raw
>> types”, which are backward-compatibility mechanisms introduced to avoid
>> breaking existing code that doesn’t know about generics.
> 
> I think Java would likely have gone with much the same syntax even if
> generics had been introduced in the beginning.
> 
>> And then, of course, the language goes on to use exactly that deprecated
>> syntax as the recommended way of accessing static members.
> 
> It's not the same syntax. List<String> is the type of a specific
> instance, while the class still remains List.

List<String> is a class, not an instance. In something like

    List<String> L;

it is L that is the instance.

See, how can you try to tell me what the difference is between Java and C++, 
when you don’t understand it yourself?

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Re: Java vs C++ Silvio <silvio@moc.com> - 2011-02-05 18:04 +0100
  Re: Java vs C++ Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-02-07 16:21 +0800
  Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 12:28 +1300
  Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-08 09:22 +1300
    Re: Java vs C++ Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-02-07 17:25 -0500
      Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-08 16:08 +1300
  Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 12:24 +1300
    Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 15:03 +1300
      Re: Java vs C++ Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-02-06 21:18 -0500
      Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 21:26 -0500
    Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 20:15 -0500
  Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 15:55 +1300
  Re: Java vs C++ "javax.swing.JSnarker" <gharriman@boojum.mit.edu> - 2011-02-06 19:54 -0500
  Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 20:50 -0500
  Re: Java vs C++ Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-02-07 15:54 +0800
  Re: Java vs C++ Thomas Richter <thor@math.tu-berlin.de> - 2011-02-07 01:04 +0100
    Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 20:26 -0500
      Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 19:09 +1300
        Re: Java vs C++ Lew <noone@lewscanon.com> - 2011-02-07 07:29 -0500
        Re: Java vs C++ "Mike Schilling" <mscottschilling@hotmail.com> - 2011-02-06 22:52 -0800
    Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 13:32 +1300
  Re: Java vs C++ Thomas Richter <thor@math.tu-berlin.de> - 2011-02-06 16:35 +0100
    Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 15:51 +1300
      Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 22:06 -0500
    Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 15:01 +1300
      Re: Java vs C++ Thomas Richter <thor@math.tu-berlin.de> - 2011-02-07 14:53 +0100
    Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-07 19:52 -0500
    Re: Java vs C++ Lew <noone@lewscanon.com> - 2011-02-06 13:09 -0500
      Re: Java vs C++ Thomas Richter <thor@math.tu-berlin.de> - 2011-02-07 00:55 +0100
    Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 15:00 +1300
      Re: Java vs C++ Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-02-06 21:20 -0500
        Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 15:52 +1300
      Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 21:25 -0500
    Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 20:29 -0500
    Re: Java vs C++ Thomas Richter <thor@math.tu-berlin.de> - 2011-02-07 00:57 +0100
    Re: Java vs C++ Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-02-06 12:57 -0500
    Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 15:22 -0500
    Re: Java vs C++ "Mike Schilling" <mscottschilling@hotmail.com> - 2011-02-06 08:11 -0800
    Re: Java vs C++ Ken Wesson <kwesson@gmail.com> - 2011-02-07 04:41 +0100
  Re: Java vs C++ Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-02-06 21:12 -0500
  Re: Java vs C++ Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 12:26 +1300
  Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 15:27 -0500
  Re: Java vs C++ Thomas Richter <thor@math.tu-berlin.de> - 2011-02-06 16:45 +0100
  Re: Java vs C++ Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 20:51 -0500

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