I guess I will have to definitively crush your dream. Sorry. It has been a decision by Microsoft to remove this from the default view to reduce the ‘clutter’. However, your ‘Show All Files’ setting will persist when you save your project. So if you show all files once and then save, then it will … Read more
Yes, its a bug. This is something new and was voted in the working paper in February 2012 (link). Nicol Bolas makes a good point in that gcc is actually the conforming compiler according to the FDIS approved C++11 standard because the changes to the working paper were made after that.
Functions and function references (i.e. id-expressions of those types) decay into function pointers almost immediately, so the expressions func and f_ref actually become function pointers in your case. You can also call (***func)(5) and (******f_ref)(6) if you like. It may be preferable to use function references in cases where you want the &-operator to work … Read more
You can’t do this. A project reference includes an identifying GUID for the referenced project, which is maintained in the solution file in order to track solution build options and dependencies. If you try to reference a project that is not in the solution, Visual Studio will complain. You can add a file reference to … Read more
In most practical applictions, there is almost no difference. However, they are implemented by calls to different underlying functions (source) and thus are not exactly the same. We can illustrate with a small example: df = spark.createDataFrame( [(1,’a’, 0), (2,’b’,None), (None,’c’,3)], [‘col’, ‘2col’, ‘third col’] ) df.show() #+—-+—-+———+ #| col|2col|third col| #+—-+—-+———+ #| 1| a| … Read more
Right click on Project1, then click on Properties. In the dialog that comes up, select Java Build Path, and then click on the Projects tab. There, add Project2 to the build path. If Project1 is a web app, you need to make sure your Deployment Assembly (same Properties UI) has Project2 there as well.
As miensol suggested, try putting this in your Web.config file: <compilation debug=”true” targetFramework=”4.0″> <assemblies> <add assembly=”System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089″ /> </assemblies> </compilation>
You could use a pointer instead of a reference if: Null is a valid return value You dynamically constructed something in the function, and the recipient becomes the owner. (In this case, you might consider returning a smart pointer such as std::unique_ptr or boost::shared_ptr.) Regardless, you would not want to return either a pointer or … Read more
Here’s a complete, working script that demonstrates what you’re asking. sub a { print “Hello World!\n”; } sub b { my $func = $_[0]; $func->(); } b(\&a); Here’s an explanation: you take a reference to function a by saying \&a. At that point you have a function reference; while normally a function would be called … Read more
If you know what you’re doing, you can make a vector of references using std::reference_wrapper: #include <functional> #include <vector> int main() { std::vector<std::reference_wrapper<int>> iv; int a = 12; iv.push_back(a); // or std::ref(a) // now iv = { 12 }; a = 13; // now iv = { 13 }; } Note of course that any … Read more