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Subject: Re: [boost] [general] What will string handling in C++ look like in the future [was Always treat ... ]
From: Artyom (artyomtnk_at_[hidden])
Date: 2011-01-19 15:50:17

> From: Dave Abrahams <dave_at_[hidden]> > > Matus Chochlik wrote: > > > > On Wed, Jan 19, 2011 at 5:26 PM, Dave Abrahams <dave_at_[hidden]> wrote: > > > Matus Chochlik wrote: > > > > > > *Scenario D:* We try for scenario A. and people still use Qstrings, >wxStrings, etc. > > > > 'I think maybe you underestimate our influence.' :) > > Our influence, if we introduce new library components, is very great, > because they're on a de-facto fast track to standardization, and an > improved string library is exactly the sort of thing that would be > adopted upstream. If we simply agree to a programming convention, > that will have some impact, but much less. > Dave, Most of existing projects and frameworks had decided about 1 single and useful encoding: - C++: + Qt UTF-16 using QString + GtkMM UTF-8 using ustring + MFC UTF-16 using CString /when compiled in "Unicode mode" + ICU UTF-16 using UnicodeString - C: + Gtk UTF-8 string - Java: UTF-16 String - C#: UTF-16 string - Vala: UTF-8 String/using "char *" And so on... If you take a look on All C++ frameworks they all have a way to convert their string to std::string and backwards. C++ hadn't picked yet, but C++ has string and very good one. And every existing project has an interface to it. The problem we hadn't decided about its encoding. Yes, we can't say to standard std::string is UTF-8 but we can say other things. As standard deprecated auto_ptr (which I think is crime but this is other story) it should deprecate all non-unicode aware uses of std::string and say default is UTF-8. It already has u8"שלום" that creates UTF-8 string using "char *" the only remaining thing is to adopt it. All frameworks decided how they use Unicode and what string they use. Boost can and **should** decide - we use Unicode - and we use UTF-8 as all frameworks did. Decide and cut it. As Boost had decided not to use tabs in source code or use BSL for all its code base. This would do only good. Sometimes it is bad to support every bad decision that was made. As many Boost Developers and Users enjoy the fact that Boost is in constant evolution so we can evolve and decide: On windows char */std::string etc is UTF-8 if you don't agree, don't use Boost. Artyom

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