Changed const in several places.

Author: peterpolidoro

Array.h

@@ -47,10 +47,10 @@ class Array
   void assign(const size_t n, const Array<U,N> & values);
   void push_back(const T & value);
   void pop_back();
-  size_t size();
-  size_t max_size();
-  bool empty();
-  bool full();
+  size_t size() const;
+  size_t max_size() const;
+  bool empty() const;
+  bool full() const;
   T * data();
 
 private:
@@ -59,7 +59,7 @@ class Array
 };
 
 template <typename T, size_t MAX_SIZE>
-inline Print & operator <<(Print & stream, const Array<T,MAX_SIZE> & array)
+inline Print & operator <<(Print & stream, Array<T,MAX_SIZE> & array)
 {
   stream.print("[");
   for (size_t i=0; i<array.size(); ++i)

ArrayDefinitions.h

@@ -149,25 +149,25 @@ void Array<T, MAX_SIZE>::pop_back()
 }
 
 template <typename T, size_t MAX_SIZE>
-size_t Array<T, MAX_SIZE>::size()
+size_t Array<T, MAX_SIZE>::size() const
 {
   return size_;
 }
 
 template <typename T, size_t MAX_SIZE>
-size_t Array<T, MAX_SIZE>::max_size()
+size_t Array<T, MAX_SIZE>::max_size() const
 {
   return MAX_SIZE;
 }
 
 template <typename T, size_t MAX_SIZE>
-bool Array<T, MAX_SIZE>::empty()
+bool Array<T, MAX_SIZE>::empty() const
 {
   return size_ == 0;
 }
 
 template <typename T, size_t MAX_SIZE>
-bool Array<T, MAX_SIZE>::full()
+bool Array<T, MAX_SIZE>::full() const
 {
   return size_ == MAX_SIZE;
 }