Struct Question

Regarding #1:

Back in the C days you declared a struct like this:
struct Foo {
   int x;
};

then you declare a variable like this:
struct tagFoo foo1;

since people hated typing the "struct" keyword, they often did a typedef to shorten the syntax so that the struct keyword wasn't required.
typedef struct Foo FooShortcut;

then you declare a variable like this:
FooShortcut foo2;

Then people started combining the structure declaration with the typedef shortcut into a single statement like this:
typedef struct Foo {
   int x;
} FooShortcut;

and declare the variable as before, like this:
FooShortcut foo3;

Then then you can call the original struct something else and treat the shortcut/typedef as the canonical name.
typedef struct tagFoo {
   int x;
} Foo;

and declare the variable with the previous short syntax, but with an even shorter name:
Foo foo4;


in C++ you can omit the struct keyword when declaring the variable in the first place:

struct Foo
{
      int x;
};
Foo foo5;

Regarding #2

struct Foo
{
   int x;
   bool EqualTo( const Foo& other ) const
   {
      return x == other.x;
   }
};

But you should consider writing it as an == operator.

struct Foo
{
   int x;
   bool operator==( const Foo& other ) const
   {
       return x == other.x;
   }
};