No, you cannot define a function within a struct in C. You can have a function pointer in a struct though but having a function pointer is very different from a member function in C++, namely there is no implicit this pointer to the containing struct instance. Contrived example (online demo http://ideone.com/kyHlQ):
You got it, pretty much. So the rest of the deal is designing the predicate function for your list. Assuming you already had a list called xs and a predicate function p, all you’d have to do is Often, you’ll see p defined as an anonymous, or lambda, expression, like so: It is not necessary, … Read more
In a C function, I want to check if an input argument (‘value’ in my case) is presented or not. i.e.: When used if(value != NULL) statement, my Console() function sends 4096 How can I check and act based on argument existence?
To figure out the problem let separate statements: setCallback needs to know type of T and it can’t deduce it from f, so give it a type
Return is how you exit out of a function body. You are using the correct approach. I suppose, depending on how your application is structured, you could also use throw. That would typically require that your calls to your function are wrapped in a try / catch block.
The origin is historical. The problem is that the rule “arrays decay into pointers, when passed to a function” is simple. Copying arrays would be kind of complicated and not very clear, since the behavior would change for different parameters and different function declarations. Note that you can still do an indirect pass by value:
You have a scope problem. Define the struct before the function, not inside it.
define() is part of the AMD spec of js See: https://github.com/amdjs/amdjs-api/wiki/AMD Edit: Also see Claudio’s answer below. Likely the more relevant explanation.
The following program calculates nCr in an efficient manner (compared to calculating factorials etc.) As of Python 3.8, binomial coefficients are available in the standard library as math.comb:
You’re allowed to have more than one return statement, so it’s legal to write It’s also unnecessary to compare boolean values to true or false, so you can write Edit: Sometimes you can’t return early because there’s more work to be done. In that case you can declare a boolean variable and set it appropriately … Read more