Pure pedantry: Replace all ".size() == 0" with ".empty()".

courgette/adjustment_method_2.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "courgette/adjustment_method.h"
 
 #include <algorithm>
 #include <limits>
 #include <list>
 #include <map>
@@ skipping 970 matching lines @@
       AddPatternToQueues(*p);
     }
     variable_queue_.ApplyPendingUpdates();
   }
 
   void RemovePatternFromQueues(const ShinglePattern* pattern) {
     int single_use_score = SingleUseScore(pattern);
     if (single_use_score > 0) {
       size_t n = single_use_pattern_queue_.erase(pattern);
       LOG_ASSERT(n == 1);
-    } else if (pattern->program_histogram_.size() == 0 &&
-               pattern->model_histogram_.size() == 0) {
+    } else if (pattern->program_histogram_.empty() &&
+               pattern->model_histogram_.empty()) {
       NOTREACHED();  // Should not come back to life.
-    } else if (pattern->program_histogram_.size() == 0) {
+    } else if (pattern->program_histogram_.empty()) {
       // Useless pattern.
     } else {
       active_non_single_use_patterns_.erase(pattern);
       AddPatternToLabelQueue(pattern, -1);
     }
   }
 
   void AddPatternToQueues(const ShinglePattern* pattern) {
     int single_use_score = SingleUseScore(pattern);
     if (single_use_score > 0) {
       single_use_pattern_queue_.insert(pattern);
-    } else if (pattern->program_histogram_.size() == 0 &&
-               pattern->model_histogram_.size() == 0) {
-    } else if (pattern->program_histogram_.size() == 0) {
+    } else if (pattern->program_histogram_.empty() &&
+               pattern->model_histogram_.empty()) {
+    } else if (pattern->program_histogram_.empty()) {
       // Useless pattern.
     } else {
       active_non_single_use_patterns_.insert(pattern);
       AddPatternToLabelQueue(pattern, +1);
     }
   }
 
   void AddPatternToLabelQueue(const ShinglePattern* pattern, int sign) {
     // For each possible assignment in this pattern, update the potential
     // contributions to the LabelInfo queues.
@@ skipping 273 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
 }  // namespace adjustment_method_2
 
 AdjustmentMethod* AdjustmentMethod::MakeShingleAdjustmentMethod() {
   return new adjustment_method_2::Adjuster();
 }
 
 }  // namespace courgette