reference

问题 I have an interface Itest: class Itest { bool testfunction(vector<int>& v, int& id); } I can mock it with: MOCK_METHOD2(testfunction, bool(vector<int>&, int&)) but how can I set the return values? I tried: vector<int> v; int i; EXPECT_CALL(testobject, testfunction(_,_, _)) .WillOnce(testing::SetArgReferee<0>(v)) .WillOnce(testing::SetArgReferee<1>(i)) .WillOnce(Return(true)); but then it is called three times.. How do I set these argReferees and the return value one time? 回答1: You combine

问题 I am trying to write a custom wrapper in c#.NET for ffmpeg. I downloaded multiple versions, but it seems like I am going to have to use the one with .exe files. ffmpeg.exe ffplay.exe ffprobe.exe However, I'm unable to reference these executables by going to add reference -> browse etc.. So what I'm trying to do now is just to add them as a file. And then run commands on them just like you would using the command line. Is that possible? Or maybe someone has a better idea? Thank you in advance

问题 I download a project on Gitgub Basically is a Console Application. But I want to translate this C# Console Application to a Universal Windows App. I want to use HttpUtility.UrlEncode in a windows 10 universal, but I can not find System.Web in .NET (Add Reference) How can I add this assembly to my project? Error: The "HttpUtility" Does not existin the current context. Im using Visual Studio 2015 I try with this question: How Add System.Web Reference To A Windows Form Application But doesnt

问题 Given I have an array: $array = array( 'a' => array( 'b' => array( 'c' => 'hello', ), ), 'd' => array( 'e' => array( 'f' => 'world', ), ), ); I want to "flatten" it to a single dimension look-up of references, concatenating keys with a delimiter ( in the case of this example, a forward slash / ) Performing a var_dump() on a successful output would yield: ( note all the references ) array(6) { ["a"]=> &array(1) { ["b"]=> &array(1) { ["c"]=> &string(5) "hello" } } ["a/b"]=> &array(1) { ["c"]=>

问题 I'm making some switches. In my MenuScene class there's some booleans that are static variables, booleans, to represent the states of these switches. Are these addressable as reference types, so I can be sure that other objects are able to change their state with a unique reference to them? The dream, in my dreamy pseudo code, I'm hoping changes to iAmOn impact the state of myButtonABC_state class MenuScene { static var myButtonABC_state: Bool = false static var myButtonXYZ_state: Bool =

问题 I just thought I'd jot this down now that I've seen it - it would be nice to get a confirmation on this behavior; I did see How do I pass a variable by reference?, but I'm not sure how to interpret it in this context. Let's say we have these two arrays/lists: a = [1, 2, 3, 4] b = [-1, a, -100, a[2], -1] The interpreter initially sees them as: >>> print(a) [1, 2, 3, 4] >>> print(b) [-1, [1, 2, 3, 4], -100, 3, -1] Now let's change a[2] , and see what happens: >>> print(a) [1, 2, 55, 4] >>>

问题 This code, with a const A& a member in B , where A has a deleted copy constructor, doesn't compile in GCC 4.8.1, but it works OK in clang 3.4: class A { public: A() = default; A(const A&) = delete; A& operator=(const A&) = delete; }; class B{ public: B(const A& a) : a{a} { } private: const A& a; }; int main() { A a{}; B b{a}; } Which one of the compilers is right? The error in GCC is: prog.cpp: In constructor ‘B::B(const A&)’: prog.cpp:11:14: error: use of deleted function ‘A::A(const A&)’ :

问题 Although the subject is discussed many times, I haven't found any satisfying answer so far. When to return data from a function by return or to pass a reference to change the data on address? The classic answer is to pass a variable as reference to a function when it becomes large (to avoid stack copying). This looks true for anything like a structure or array. However returning a pointer from a function is not uncommon. In fact some functions from the C library to the exact thing. For

问题 Although the subject is discussed many times, I haven't found any satisfying answer so far. When to return data from a function by return or to pass a reference to change the data on address? The classic answer is to pass a variable as reference to a function when it becomes large (to avoid stack copying). This looks true for anything like a structure or array. However returning a pointer from a function is not uncommon. In fact some functions from the C library to the exact thing. For

问题 Given the following code: class foo { }; class bar: public foo { public: ~bar() { printf("~bar()\n"); } }; class zab: public foo { public: ~zab() { printf("~zab()\n"); } }; struct foo_holder { const foo &f; }; int main() { foo_holder holder[]= { {bar()}, {zab()} }; printf("done!\n"); return 0; } the output is: ~bar() ~zab() done! C++0x has a clause that dictates this can create dangling references when used as a new initializer, but it says nothing (at least nothing I can find) about