Consider the following code:When executed, it writes that Hashcode is 0, but fails with NullReferenceException in attempt to determine type of x. I know that methods called on nullable types are actually called on underlying values, so I expected program to fail during x.GetHashCode().
I'm calling a third-party API which has a method that looks like this:My challenge is, I have to call Discover because it does some work under-the-covers that I need. At the same time, I have to wait for Discover to complete before running my custom code. To further complicate matters,...
This question already has an answer here:I wrote a program that runs a simple for loop in both C++ and C#, yet the same thing takes dramatically longer in C#, why is that? Did I fail to account for something in my test?
I want to add const to a reference type by typedef const A B;.Somehow it doesn't work. Is this not possible in c++?
Consider this snippet of a C program:It compiles without any error and, when executed, it gives the following output
I need help with below code, I created a button to show and hide a div. I applied some jQuery to it. Everything seems to be fine to me but it is still not working, I cannot seem to find why?
Here is my code. If I remove default constructor, there will be error below. But if I add a default constructor, it will have no issues compiling and running. Wondering why? I am especially confused since default constructor is not used at all in runtime, why it is required at...
Here is a strange situation:If I comment out the call to feed_usingExplicitTypeClassInstance below, then I get a compiler error.
In On Lisp (page 9), one can find the following claim:Functions are the building-blocks of Lisp programs. They are also the building-blocks of Lisp. In most languages the + operator is something quite different from user-defined functions. But Lisp has a single model, function application, to describe all the computation...
Consider the following data.frame and chart: Some labels are hard to read due to small values. I'd like to jitter those vertically. I'm aware of position_jitter but it doesn't seem compatible with a stacked bar chart.