Discussions - comp.lang.c++

	Are additional constructors for standard containers allowed?
	With MSVC 10.0 std::bitset<32>( 666u ) does not compile. Apparently due to an extra constructor taking 'int' argument. Is that allowed by the standard? Cheers, - Alf By Alf P. Steinbach /Usenet - 6:37pm - 4 new of 4 messages

	UB while dealing with invalid raw pointers, the std::uninitialized_fill case
	Hi there, as far as I've been able to understand, if a raw pointer contains an invalid value (that is, it does not point to any valid object of the type it is a pointer to) then some of the actions performed on these pointers will lead to UB. As it seems, two actions in particular should be safe and well defined:... more » By Francesco S. Carta - 5:52pm - 9 new of 9 messages

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"partial" iterator?

Hello, I have a std::map<std::string, boost::shared_ptr<my_type_t>>. I often lookup based on the key (std::string) I have a use case where I want to iterate over all the map except for keys that begin with "RF". I could iterate and check if iterator->first.find("RF")==0, then ignore it. typedef std::map<std::string, boost::shared_ptr<my_type_t>> my_container_t;... more »

By Hicham Mouline - 9:39am - 3 new of 3 messages

	simple boost::test, undefined reference to main
	Hi, the following code does not compile and being a newbie, i am unable to figure it out. could you please help? ...int add( int i, int j ) { return i+j; } BOOST_AUTO_TEST_CASE( my_test ){ BOOST_CHECK( add( 2,2 ) == 4 ); ...compiled with the command, g++ test.cpp -lboost_unit_test_framework Error: undefined reference to `main'... more » By suresh - 4:32am - 14 new of 14 messages

	Use Cases for Concurrent Data Structures
	Libraries of data structures designed to support concurrent operations and to scale well with the number of threads are common, e.g., ConcurrentHashMap and ConcurrentLinkedQueue in Java, ConcurrentQueue and ConcurrentBag in .NET, concurrent_queue and concurrent_vector in TBB and PPL. If the comments in a... more » By Scott Meyers - 2:37am - 3 new of 3 messages

	can I use stl vector iterator to delete a vector of pointers?
	hi, there, Assume I have a vector of points vector<obj> v and I need to free the memory. More over, some of the element in v are already deleted (null pointer). Is it ok if I do like this: for (vector<Obj>::iterator it(v.begin()), ite(v.end()); it!= ite; + +it{ if (it != 0){ delete it;... more » By zl2k - 1:48am - 18 new of 18 messages

Using "setlocate()" to get the language

Hello, I'm writing some cross-platform software in C++, within it I have a list of strings for various languages - My problem now is, how do I determine the language setting of the person running the code so I can present them information in the correct language? I'd rather not have to resort to an entire framework just for this small function.... more »

By CodHubIV - Sep 2 - 10 new of 10 messages