reference

问题 I'm having an issue with Devart DLLs not getting copied to the bin folder of my web app. I have my web app project that references projectA. ProjectA references projectB. The Devart Dlls are used in projectB and are not being copied into the web app projects bin folder during a build. ProjectB also references EL Unity dlls and they are being copied correctly. All of the Dlls in question are physically located in a folder in projectB and that is where the reference point. (I don't have the

问题 I have seen a lot of questions about that on the web (SOF and Google) but so far no clear answer to the issue. I have a usual Ember application with various views and controllers. One of my views has an instance method that I would like to call from a static context. Thus in a normal javascript file. I should I get a reference to the view instanciated by ember to call the method on ? A few lines of code to illustrate my issue : In ApplicationView.js : App.ApplicationView = Em.View.extend({

问题 I am trying to block access to the default constructor of a class I am writing. The constructor I want others to use requires a const reference to another object. I have made the default constructor private to prevent others from using it. I am getting a compiler error for the default constructor because the const reference member variable is not initialized properly. What can I do to make this compile? class CFoo { public: CFoo(); ~CFoo(); }; class CBar { public: CBar(const CFoo& foo) :

问题 I am trying to block access to the default constructor of a class I am writing. The constructor I want others to use requires a const reference to another object. I have made the default constructor private to prevent others from using it. I am getting a compiler error for the default constructor because the const reference member variable is not initialized properly. What can I do to make this compile? class CFoo { public: CFoo(); ~CFoo(); }; class CBar { public: CBar(const CFoo& foo) :

问题 While using some local lambda objects in a C++11 function I was tempted to declare them as const static auto lambda = ... just to let the compiler know that there is just one std::function object needed (and possibly optimize the call and/or inline it) but I realized that capturing local values by reference in this circumstance leads to weird behavior. Consider the following code: void process(const Data& data, const std::function<void(DataElement&>& lambda) { ... } void SomeClass:

问题 As an example create table indexing_table ( id SERIAL PRIMARY KEY, created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(), ); Is there a difference between the following tables? Table 1: create table referencing_table ( indexing_table_id INTEGER references indexing_table ); Table 2: create table referencing_table ( indexing_table_id INTEGER references indexing_table NOT NULL ); Alternatively, in the case of Table 1, where there is no NOT NULL constraint, are we allowed to insert records containing

问题 Does a reference have a storage location or is it just an alias for another location? Does this differ by C++ revision or is it consistent with all versions of C++? And if a reference has a storage location, does it then just allow value semantics on a pointer like type? How would a reference work when you use it as such: struct aStruct{ int aVariable; aClass& aReferencetoaClass; }; Does it take up space or is it an alias? 回答1: The latest C++20 spec(§ 9.2.3.3) and at least since the C++ 2005

问题 I simply get the following error: The type or namespace name 'Reporting' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) after adding this to my code: protected global::Microsoft.Reporting.WebForms.ReportViewer ReportViewer1; I've seen some solutions saying I must add some assemblies. but none of them worked. here is an example: <add assembly="Microsoft.ReportViewer.Common, Version=9.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/> <add assembly=

问题 From the discussion that has happened in my recent question (Why is a c++ reference considered safer than a pointer?), it raises another question in my mind: What exactly was the rationale behind introducing references in c++? 回答1: Section 3.7 of Stroustrup's Design and Evolution of C++ describes the introduction of references into the language. If you're interested in the rationale behind any feature of C++, I highly recommend this book. References were introduced primarily to support

问题 From the discussion that has happened in my recent question (Why is a c++ reference considered safer than a pointer?), it raises another question in my mind: What exactly was the rationale behind introducing references in c++? 回答1: Section 3.7 of Stroustrup's Design and Evolution of C++ describes the introduction of references into the language. If you're interested in the rationale behind any feature of C++, I highly recommend this book. References were introduced primarily to support