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Re: "constexpr" Visual Studio 2013 update 2 9 Years Ago by mike_2000_17 …standard libraries or Boost libraries, they will only use constexpr if it is supported by the compiler they are … Although it can probably be used in interesting ways, constexpr is mostly a syntactic sugar (for when you need a… is, there probably aren't any important libraries for which constexpr is an absolute necessity, at least, not yet. >… "constexpr" Visual Studio 2013 update 2 9 Years Ago by Sarkurd Hi i tried to test some new features of C++ 11 but how come Visual Studio doesn't support `constexpr`? i tried this simple function but it won't compile constexpr int multiply(int x, int y) { return x * y; } Re: "constexpr" Visual Studio 2013 update 2 9 Years Ago by mike_2000_17 From what the guys over at Clang and GCC have said, the constexpr feature is actually one of the hardest features to implement from C++11. I think it's because it actually constitutes (another) compile-time Turing complete language on top of C++. Re: "constexpr" Visual Studio 2013 update 2 9 Years Ago by vijayan121 > i tried this simple function but it won't compile `constexpr int multiply( int x, int y ){ return x*y ; }` The November 2013 CTP will compile it. http://www.microsoft.com/en-us/download/details.aspx?id=41151&751be11f-ede8-5a0c-058c-2ee190a24fa6=True&fa43d42b-25b5-4a42-fe9b-1634f450f5ee=True Re: "constexpr" Visual Studio 2013 update 2 9 Years Ago by Sarkurd Thanks `vijayan121` it worked. i don't know how important is constexpr yet, should i use GCC instead of VS? C++11 Compile-time String Concatenation with constexpr 9 Years Ago by mike_2000_17 …: template <unsigned int N> constexpr literal_str_list(const char(&aStr)[N], const literal_str_list…; (hd_size + text_size) ? text_ptr[i - hd_size] : '\0')); }; constexpr char operator[](unsigned int i) const { return (head != nullptr ? get_char_from_head… Re: C++11 Compile-time String Concatenation with constexpr 9 Years Ago by mike_2000_17 …template <> struct ct_itoa<0> { static constexpr literal_str_list text = literal_str_list(""); }; // Define static member …type RIndices; return add_literal_arrays_impl(lhs, LIndices(), rhs, RIndices()); }; constexpr auto example_str_concat = LSA("Hello ") + LSA("World… Re: C++11 Compile-time String Concatenation with constexpr 9 Years Ago by mike_2000_17 … template <> struct ct_itoa<0> { static constexpr literal_str_list text = literal_str_list(""); }; // Define static member …outside the template: constexpr literal_str_list ct_itoa<0>::text; template <unsigned int… Re: C++11 Compile-time String Concatenation with constexpr 9 Years Ago by vijayan121 ….substr( 3, 5 ) << '\n' ; // lo wo constexpr auto s137 = sprout::to_string( 137 ) ; constexpr auto pi = sprout::to_string( double(22) / 7… * 3.142856 = 430.571429 static_assert( eqn <= hello_world, "" ) ; constexpr auto hash = sprout::to_hash(eqn) ; std::cout << hash… Re: C++11 Compile-time String Concatenation with constexpr 9 Years Ago by mike_2000_17 … want a lean and mean approach that relies only on `constexpr`. c++ 11 Years Ago by logic20 …(since C++11) char32_t(since C++11) class compl const constexpr(since C++11) const_cast continue decltype(since C++11) default… How to update MS Visual studio 2010 express c++? 10 Years Ago by MasterHacker110 I would like to start using the new fetures of c++0x like the constexpr. I currently have visual studio 2010 express c++ and I was wondering if there is a way to update the compiler but still use the same GUI? Oh and if anyone know how to permanantly disable incremental linking. Please let me know. Help with Hash Table of Objects insertion 10 Years Ago by g12mcgov …:206:5: note: template<class _T1, class _T2> constexpr bool std::operator==(const std::pair<_T1, _T2>… Suggest good OPP design for my solution 4 Years Ago by volan … false; } bool Winner :: findSymbol( std::string symbol, std::string message ) { constexpr std::size_t MAX_DISTINCT_CHAR_VALUES = std::numeric_limits<unsigned char>::max… Re: C++ This Keyword and Shadowing.. 11 Years Ago by vijayan121 …http://www.stroustrup.com/C++11FAQ.html#constexpr constexpr A() = default ; // x == 0, y == 0 constexpr explicit A( int x ) :…C++11FAQ.html#delegating-ctor constexpr B() : B(0,0,0) {} constexpr explicit B( int x )… with 9 when we use an inherited construtor constexpr C( int x, int y, int z… Re: sorting the pair 11 Years Ago by vijayan121 …::string, std::string, int > ; constexpr get_tuple_element<0> title ; constexpr get_tuple_element<1> author ; constexpr get_tuple_element<2> num_copies… Re: template parameters as base class - incomprehensible stroustrup 10 Years Ago by mike_2000_17 …, if you used an alternative to that, like `constexpr std::string`, which would have compile-time value semantics… difficult to achieve for strings, because writing a constexpr string is pretty hard (but [possible](http://akrzemi1…/)), and it would also imply a constexpr comparison function and a constexpr hashing function. Now, the compiler could… Re: Practice Problem: Mapping 12 Years Ago by mike_2000_17 …Size, unsigned int Index> struct decoding { static constexpr std::string value(const int (&arr)[Size]) …gt; struct decoding<Size, Size> { static constexpr std::string value(const int (&)[Size]) { return…quot;"; }; }; template <unsigned int Size> constexpr std::string decode(const int (&arr)[Size]) { return … Re: What's wrong with my code 9 Years Ago by vijayan121 … int` may be inadequate.) #include <iostream> int main() { constexpr auto upper_bound = 1'000'000'000'000 ; // C++14 literal… // constexpr auto upper_bound = 1000000000000 ; // C++11 constexpr auto lower_bound = -1'000'000'000'000 ; // … Re: How to make separate functions to get the mean and standard deviation? 1 Year Ago by toneewa …; using namespace std; //define the dimensions of the grid constexpr auto MAX_X = 4; constexpr auto MAX_Y = 4; //define the iterations #define ITERATIONS…("The file 'data.txt' was not opened\n"); } constexpr double MCSTEPS = 5.0; double sum_1 = 0; double sum_2 = 0… Re: which kinds of constructors may be applied during compile time as optimization? 13 Years Ago by vijayan121 > which kinds of constructors can be applied during compile time ? None in C++98; though constructors can be elided as in the case of RV optimization. Objects constructed via the the constexpr mechanism in C++0x. [url]http://www2.research.att.com/~bs/C++0xFAQ.html#constexpr[/url] Re: template parameters as base class - incomprehensible stroustrup 10 Years Ago by mike_2000_17 … is that the string literal is (presumably) converted to a `constexpr` `std::string` object and that that object is used as… as template value parameters (only integral types), and (2) a `constexpr` string is not even a literal type because it is… Re: Birthday paradox problem 2 Years Ago by toneewa … z = 0; int counter = 0; double dup = 0; constexpr int MIN = 1; constexpr int MAX = 365; std::srand(static_cast<unsigned int… Re: Trigonometric Function Optimization 12 Years Ago by mike_2000_17 … can use C++0x, you should mark those functions with constexpr keyword to allow compile-time computation of the values whenever… Re: Trigonometric Function Optimization 12 Years Ago by mrnutty … can use C++0x, you should mark those functions with constexpr keyword to allow compile-time computation of the values whenever… Re: C++0x Tutorial and Examples 12 Years Ago by mike_2000_17 …;. I'm thinking "auto", initializer_list, lambdas, rvalue-references, constexpr, range for-loops, decltype(), variadic templates, etc. I guess the… Re: C++ C-Style Type Casting 12 Years Ago by mike_2000_17 …] #include <type_traits> template<class T> inline constexpr bool IsValidUnsignedLong(T) { return std::is_unsigned<T>::value… Re: C++0x Compiler 12 Years Ago by dospy …/array/pointer>) [/CODE] is not valid same goes for 'constexpr' and many more.. for more vizit [url]http://blogs.msdn… Re: How can I a string from a . txt, reverse it and write it to another .txt in C++? 12 Years Ago by vijayan121 … at compile-time. [CODE]std::string reverse_amount( std::string amount ) { constexpr char DOT = '.' ; auto dot_pos = amount.find( DOT ) ; // locate the dot… Re: Restricting string input size - C vs. C++ strings 12 Years Ago by vijayan121 … too long is simpler. Something like: [code] std::string name ; constexpr std::string::size_type MAX_CHARS = 20 ; if( std::cout <<…