Let I be some integral type. Now suppose I have a enum class my_enum_class : I, with values which may not be consecutive. And now I get some I value. How do I check whether it's a value enumerated in my_enum_class?
Let I be some integral type. Now Suppose I have a enum class my_enum_class : I, with values which may not be consecutive. And now I get some I value. How do I check whether it's a value enumerated in my_enum_class?
For such code:clang (linux/7.0.0) reports no errors [-c -std=c++11 -pedantic], but gcc (linux/8.2.1) doesn't compile it:
This question already has an answer here:I'm currently working on a Dungeon game project which is composed of multiples rooms connected to each other.
While looking at the source code of the Comparators class, I came across these lines of code.I think I understand what this does. It's a Singleton instance which implements the Comparator interface. It uses the "compareTo" of classes that implement the Comparable interface for natural ordering (please correct me if...
New to C so Im getting confused here.I have three different enumwhat exactly are the differences between these three?
For an enumeration defined in a class, like Is the enumeration a static nested class (https://docs.oracle.com/javase/tutorial/java/javaOO/nested.html)? It seems to be the case judging from the syntax used to refer to it. Or is it a non-static nested class (an inner class)?
I want to check if a variable in a class was set or not? How can I do it?I want to know if the variable Color c was assigned or not ?
I want to check the variable in class was set or not? How can I do it?I want to know the c was assigned or not ?
Given the following enum:I realize we are able to write it this way:which is equivalent to:May I know why such syntax is allowed? Is there a way to let the compiler warn us against this?