Discussions - comp.lang.c++

C++ templates have grown to be language within a language, at least for some users. Do most programmers overuse templates? Given that C++ template techniques, and some of them are quite intricate, can lock in an entire codebase (that is, require a ground-up re-implementation if wanting to use another, perhaps new, language), is extreme template... more »

By tonytech08 - 1:36pm - 1 new of 1 message

	how to sort std::vector contains user defined struct by multiple value?
	Hi, all: I have a std::vector which contains my struct. The data in the vector is inserted from a std::map, then I will need to sort the vector based on some criteria and then get the sorted data out. my struct is like: struct item { int itemtypeid; int itemid; ...typedef std::deque<item> ItemList;... more » By rockdale - 11:46am - 2 new of 2 messages

	Proper use of templated containers as class members
	I am finding myself doing the following rather often when I have template containers in classed, e.g. stl::map For example: class Foo { public: typedef std::map<std::string, int> direcory_t; //More typedefs of the same style... private: directory_t directory_m; //More members of the same style...... more » By Per - 5:15am - 6 new of 6 messages

	library for http/ftp requests
	hi, which is a good library to work with to enable downloading files / http pages in my project? thanks, leo By A.Leopold - 5:57am - 6 new of 6 messages

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	Announce: https support added to webEbenezer.net
	Shalom We've recently added https support to the C++ Middleware Writer -- [link]. We have a self-signed certificate so you may have to add an exception or override a warning of some sort to get to the page. Thanks to Jeff Haynes at [link] for the help in getting this working.... more » By c...@mailvault.com - 12:14am - 1 new of 1 message

	Ill-formed program
	Hi, What is the relationship between the terms ill-formed, diagnosable rules, undiagnosable rules and undefined behavior as mentioned in the C ++ standard. Regards, Dabs By rkld...@gmail.com - Dec 3 - 2 new of 2 messages

	coding standard: typedef of a full template instantiation
	namespace com { namespace product { template < typename T1, typename T2 > class S; namespace subns { typedef S<int, int> S; ...Note here the type subns::S overrides the S template from the enclosing namespace. This compiles ok with VS and g++. Is this use frowned upon? against coding styles out there?... more » By Hicham Mouline - Dec 3 - 2 new of 2 messages

	deduce element type of c-array template argument
	Hi, What is ?? in <code> template< typename T > struct element_type { typedef ?? type; }; <code> so that i.e boost::is_same<element_type<float[3]>::type, float>::value is true? Thanks in advance, -- Maik By Maik - Dec 3 - 3 new of 3 messages

	anybody knows why?
	The ISO standard says (in 8.5 [dcl.init] paragraph 9): If no initializer is specified for an object, and the object is of (possibly cv-qualified) non-POD class type (or array thereof), the object shall be default-initialized; if the object is of const-qualified type, the underlying class type shall have a... more » By Yan - Dec 3 - 3 new of 3 messages