The end of a constructor is a special place in terms of concurrency, with respect to final fields. From section 17.5 of the Java Language Specification: An object is considered to be completely initialized when its constructor finishes. A thread that can only see a reference to an object after that object has been completely … Read more
this is a prvalue, so decltype(this) should always be plain X* (or X cv* / cv X*). The addition of const& seems to be a bug in GCC (tested with g++ 4.8.1), which happens only for a class template (not for a “plain” class) and only inside the trailing return type (not inside the body … Read more
Editor’s Draft of Console API used to say: Logging APIs SHOULD all be callable functions allowing them to be passed as arguments to error handling callbacks, forEach methods, etc. This is no longer included in the current version of the specification. I thought that Chrome and Node.js changed it to work like in the specification, … Read more
As noted in comments, you’re seeing the this pointer for a temporary and then copying the temporary into the vector. Since the temporary is temporary your system is reusing the same memory location on each loop iteration. However, if you print the this pointer for the vector elements, you will notice they are placed in … Read more
Same word: this Only difference is it is a pointer, so you need to use the -> operator: void setX(int x) { this->x = x; }
CoffeeScript links both this and @ to the outer context, therefore you cannot access the context that jQuery provided (aka the desired “this”). Use event.target instead: class PostForm constructor: -> $(‘ul.tabs li’).on ‘click’, (event) => tab = $(event.target) @highlight_tab(tab)
In non-strict mode, this has undergone an Object(this) transformation, so it’s always truthy. The exceptions are null and undefined which map to the global object. So this is never null and always truthy, making both checks superfluous. In strict mode, however, this can be anything so in that case you’d have to watch out. But … Read more
No, it’s not possible. You can call a method with a specified value for this (using method.apply()/method.call()) but you cannot re-assign the keyword, this.