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c++ Programming Glossary: is_constructiblehttp://stackoverflow.com/questions/12192895/should-in-c11-stdvectorresizesize-type-work-for-the-default-constructi std is_default_constructible T as equivalent to std is_constructible T where 20.9.4.3 6 specifies std is_constructible T Args..... to std is_constructible T where 20.9.4.3 6 specifies std is_constructible T Args... as the well formedness criterion on T t std declval..
(Im)perfect forwarding with variadic templates http://stackoverflow.com/questions/13296461/imperfect-forwarding-with-variadic-templates those exact terms template typename... Args EnableIf std is_constructible foo_impl Args... ... foo Args ... args Benefit This is now officially.. to foo . In other words std is_convertible T foo value std is_constructible foo_impl T value putting aside the matter of other constructors.. immediately to mind template typename... Args EnableIf std is_constructible foo_impl Args... ... explicit foo Args ... args A second attempt..
Move member function generation http://stackoverflow.com/questions/16897845/move-member-function-generation question std is_move_constructible T is true iff std is_constructible T T is true but that doesn't imply that such a construction.. that could accept an argument of type value so std is_constructible value value is false. When value s is a string the type's copy.. value v2 std move v1 calls copy constructor That means std is_constructible value value is true even though it invokes the copy constructor..
Why doesn't emplace_back() use uniform initialization? http://stackoverflow.com/questions/8782895/why-doesnt-emplace-back-use-uniform-initialization The proposed compromise is to use SFINAE with std is_constructible which tests whether direct initialization is well formed. If.. tests whether direct initialization is well formed. If is_constructible is false then an alternative std allocator construct overload..
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