Linked Questions

I would like to replace code like this: if ((obj != nullptr) && obj->is_valid()) with if (obj->is_valid()) where class Obj { bool is_valid() { if (this == nullptr) ...

Lets say I have the following class struct FooList { int data; FooList *next; // basic constructor FooList(int d, FooList *n): data(d), next(n) {} // basic destructor ~...

Let's consider this piece of code: struct config { int get( ) { if ( this == nullptr ) return 1; return value; } int value = 5; }; config* c = nullptr; int result = ...

I was recently reading Programming: Principles and Practice Using C++ (2nd Edition), and I came upon this snippet inside a function for inserting into a linked list (Page 619): if (n==nullptr) return ...

I have seen C++ classes that check the this pointer to make sure it is not nullptr before using a field. Here is a simplified example of what I'm talking about: #include <iostream> class object ...

Saw this line in a class method and my first reaction was to ridicule the developer that wrote it.. But then, I figured I should make sure I was right first. public void dataViewActivated(...

GCC 6 has a new optimizer feature: It assumes that this is always not null and optimizes based on that. Value range propagation now assumes that the this pointer of C++ member functions is non-null. ...

If I come across old code that does if (!this) return; in an app, how severe a risk is this? Is it a dangerous ticking time bomb that requires an immediate app-wide search and destroy effort, or is it ...

In Qt I have to wait for 1 second and let event process so I use QTime lDieTime= QTime::currentTime().addSecs(1); while (QTime::currentTime() < lDieTime) QCoreApplication::processEvents(...

Let's say whe have class Foo{ public: bool error; ...... bool isValid(){return error==false;} }; and somewhere Foo *aFoo=NULL; I usually would do if (aFoo!=NULL && ...

I need call native method like that: java code: private native Object SendFiles(String strEmail, DeviceInfo info, String [] arrFiles, int cntFiles, ID idRequest); call SendFiles(); SendFiles(...

I have to call a function of a class from another function of the same class. But the problem is for some cases the current object can be destroyed. So for this case calling the function is creating ...

This is not about explicit code, so apologies if it should have been posted elsewhere. It is, however, solidly within the domain of testing, which I assume you guys to be right at home in. I'm ...