1 files changed, 23 insertions, 23 deletions

diff --git a/utils/array2d.h b/utils/array2d.h
index ee2600d2..1a8e4157 100644
--- a/utils/array2d.h
+++ b/utils/array2d.h
@@ -15,12 +15,12 @@ class Array2D {
   typedef typename std::vector<T>::iterator iterator;
   typedef typename std::vector<T>::const_iterator const_iterator;
   Array2D() : width_(0), height_(0) {}
-  Array2D(int w, int h, const T& d = T()) :
+  Array2D(unsigned w, unsigned h, const T& d = T()) :
     width_(w), height_(h), data_(w*h, d) {}
   Array2D(const Array2D& rhs) :
     width_(rhs.width_), height_(rhs.height_), data_(rhs.data_) {}
   bool empty() const { return data_.empty(); }
-  void resize(int w, int h, const T& d = T()) {
+  void resize(unsigned w, unsigned h, const T& d = T()) {
     data_.resize(w * h, d);
     width_ = w;
     height_ = h;
@@ -32,25 +32,25 @@ class Array2D {
     return *this;
   }
   void fill(const T& v) { data_.assign(data_.size(), v); }
-  int width() const { return width_; }
-  int height() const { return height_; }
-  reference operator()(int i, int j) {
+  unsigned width() const { return width_; }
+  unsigned height() const { return height_; }
+  reference operator()(unsigned i, unsigned j) {
     return data_[offset(i, j)];
   }
   void clear() { data_.clear(); width_=0; height_=0; }
-  const_reference operator()(int i, int j) const {
+  const_reference operator()(unsigned i, unsigned j) const {
     return data_[offset(i, j)];
   }
-  iterator begin_col(int j) {
+  iterator begin_col(unsigned j) {
     return data_.begin() + offset(0,j);
   }
-  const_iterator begin_col(int j) const {
+  const_iterator begin_col(unsigned j) const {
     return data_.begin() + offset(0,j);
   }
-  iterator end_col(int j) {
+  iterator end_col(unsigned j) {
     return data_.begin() + offset(0,j) + width_;
   }
-  const_iterator end_col(int j) const {
+  const_iterator end_col(unsigned j) const {
     return data_.begin() + offset(0,j) + width_;
   }
   iterator end() { return data_.end(); }
@@ -71,14 +71,14 @@ class Array2D {
   }
 
  private:
-  inline int offset(int i, int j) const {
+  inline unsigned offset(unsigned i, unsigned j) const {
     assert(i<width_);
     assert(j<height_);
     return i + j * width_;
   }
 
-  int width_;
-  int height_;
+  unsigned width_;
+  unsigned height_;
 
   std::vector<T> data_;
 };
@@ -120,8 +120,8 @@ Array2D<T> operator-(const Array2D<T>& l, const Array2D<T>& r) {
 
 template <typename T>
 inline std::ostream& operator<<(std::ostream& os, const Array2D<T>& m) {
-  for (int i=0; i<m.width(); ++i) {
-    for (int j=0; j<m.height(); ++j)
+  for (unsigned i=0; i<m.width(); ++i) {
+    for (unsigned j=0; j<m.height(); ++j)
       os << '\t' << m(i,j);
     os << '\n';
   }
@@ -130,17 +130,17 @@ inline std::ostream& operator<<(std::ostream& os, const Array2D<T>& m) {
 
 inline std::ostream& operator<<(std::ostream& os, const Array2D<bool>& m) {
   os << ' ';
-  for (int j=0; j<m.height(); ++j)
+  for (unsigned j=0; j<m.height(); ++j)
     os << (j%10);
   os << "\n";
-  for (int i=0; i<m.width(); ++i) {
+  for (unsigned i=0; i<m.width(); ++i) {
     os << (i%10);
-    for (int j=0; j<m.height(); ++j)
+    for (unsigned j=0; j<m.height(); ++j)
       os << (m(i,j) ? '*' : '.');
     os << (i%10) << "\n";
   }
   os << ' ';
-  for (int j=0; j<m.height(); ++j)
+  for (unsigned j=0; j<m.height(); ++j)
     os << (j%10);
   os << "\n";
   return os;
@@ -148,12 +148,12 @@ inline std::ostream& operator<<(std::ostream& os, const Array2D<bool>& m) {
 
 inline std::ostream& operator<<(std::ostream& os, const Array2D<std::vector<bool> >& m) {
   os << ' ';
-  for (int j=0; j<m.height(); ++j)
+  for (unsigned j=0; j<m.height(); ++j)
     os << (j%10) << "\t";
   os << "\n";
-  for (int i=0; i<m.width(); ++i) {
+  for (unsigned i=0; i<m.width(); ++i) {
     os << (i%10);
-    for (int j=0; j<m.height(); ++j) {
+    for (unsigned j=0; j<m.height(); ++j) {
       const std::vector<bool>& ar = m(i,j);
       for (unsigned k=0; k<ar.size(); ++k)
         os << (ar[k] ? '*' : '.');
@@ -162,7 +162,7 @@ inline std::ostream& operator<<(std::ostream& os, const Array2D<std::vector<bool
     os << (i%10) << "\n";
   }
   os << ' ';
-  for (int j=0; j<m.height(); ++j)
+  for (unsigned j=0; j<m.height(); ++j)
     os << (j%10) << "\t";
   os << "\n";
   return os;