Added stream operator overload for printing.

Author: peterpolidoro

Array.h

@@ -45,6 +45,23 @@ class Array
   T values_[MAX_SIZE];
   size_t size_;
 };
+
+template <typename T, size_t MAX_SIZE>
+inline Print &operator <<(Print &stream, const Array<T,MAX_SIZE> &array)
+{
+  stream.print("[");
+  for (int i=0; i<array.size(); i++)
+  {
+    if (i != 0)
+    {
+      stream.print(",");
+    }
+    stream.print(array[i]);
+  }
+  stream.print("]");
+  return stream;
+}
+
 #include "ArrayDefinitions.h"
 
 #endif

examples/AdvancedArrayTester/AdvancedArrayTester.ino

@@ -8,26 +8,12 @@ const unsigned int MAX_SIZE = 10;
 
 Array<int, MAX_SIZE> array;
 
-void printArray(Array<int,MAX_SIZE> array)
-{
-  Serial << "array = [";
-  for (int i=0; i<array.size(); i++)
-  {
-    if (i != 0)
-    {
-      Serial << ",";
-    }
-    Serial << array[i];
-  }
-  Serial << "]" << endl;
-}
-
 void setup()
 {
   Serial.begin(BAUDRATE);
   delay(1000);
 
-  printArray(array);
+  Serial << array << endl;
   Serial << "array.max_size() = " << array.max_size() << endl;
   Serial << "array.size() = " << array.size() << endl;
   Serial << "array.empty() = " << array.empty() << endl;
@@ -38,7 +24,7 @@ void setup()
   int array_simple[simple_size] = {8,9,10};
   array.assign(simple_size,array_simple);
 
-  printArray(array);
+  Serial << array << endl;
   Serial << "array.max_size() = " << array.max_size() << endl;
   Serial << "array.size() = " << array.size() << endl;
   Serial << "array.empty() = " << array.empty() << endl;
@@ -47,7 +33,7 @@ void setup()
 
   array.push_back(39);
   array.push_back(73);
-  printArray(array);
+  Serial << array << endl;
   Serial << "array.size() = " << array.size() << endl;
   Serial << "array.front() = " << array.front() << endl;
   Serial << "array.back() = " << array.back() << endl;
@@ -56,7 +42,7 @@ void setup()
   array.pop_back();
   array.pop_back();
   array.pop_back();
-  printArray(array);
+  Serial << array << endl;
   Serial << "array.size() = " << array.size() << endl;
   Serial << "array.front() = " << array.front() << endl;
   Serial << "array.back() = " << array.back() << endl;

examples/ArrayTester/ArrayTester.ino

@@ -7,24 +7,10 @@ const int BAUDRATE = 9600;
 
 const int ELEMENT_COUNT = 5;
 
-void printArray(Array<int,ELEMENT_COUNT> array)
-{
-  Serial << "[";
-  for (int i=0; i<ELEMENT_COUNT; i++)
-  {
-    if (i != 0)
-    {
-      Serial << ",";
-    }
-    Serial << array[i];
-  }
-  Serial << "]" << endl;
-}
-
 void printArray(const int (&array)[ELEMENT_COUNT])
 {
   Array<int,ELEMENT_COUNT> array_copy(array);
-  printArray(array_copy);
+  Serial << array_copy << endl;
 }
 
 Array<int,ELEMENT_COUNT> generateArray()
@@ -61,39 +47,39 @@ void setup()
   array.push_back(0);
   array.pop_back();
   Serial << "array:" << endl;
-  printArray(array);
+  Serial << array << endl;
 
   const int array_simple[ELEMENT_COUNT] = {15,14,13,12,11};
   Serial << "array_simple:" << endl;
   printArray(array_simple);
 
   Array<int,ELEMENT_COUNT> array_copy(array_simple);
   Serial << "array_copy:" << endl;
-  printArray(array_copy);
+  Serial << array_copy << endl;
 
   Array<int,ELEMENT_COUNT> array_initialized(ELEMENT_COUNT);
   Serial << "array_initialized:" << endl;
-  printArray(array_initialized);
+  Serial << array_initialized << endl;
 
   array_initialized.fill(37);
   Serial << "array_initialized.fill(37):" << endl;
-  printArray(array_initialized);
+  Serial << array_initialized << endl;
 
   array_initialized.fill(array_simple);
   Serial << "array_initialized.fill(array_simple):" << endl;
-  printArray(array_initialized);
+  Serial << array_initialized << endl;
 
   array_initialized[3] = 666;
   Serial << "array_initialized[3] = 666:" << endl;
-  printArray(array_initialized);
+  Serial << array_initialized << endl;
 
   Array<int,ELEMENT_COUNT> array_generated = generateArray();
   Serial << "array_generated:" << endl;
-  printArray(array_generated);
+  Serial << array_generated << endl;
 
   Array<int,ELEMENT_COUNT> array_doubled = doubleElements(array_generated);
   Serial << "array_doubled:" << endl;
-  printArray(array_doubled);
+  Serial << array_doubled << endl;
 
   int out_of_bounds = array_doubled[ELEMENT_COUNT+1];
   Serial << "out_of_bounds: " << out_of_bounds << endl;