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

o3d/core/cross/gl/effect_gl.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 360 matching lines @@
 
 // Given a CG_SAMPLER parameter, find the corresponding CG_TEXTURE
 // parameter. From this CG_TEXTURE, find a matching Param by name.
 ParamTexture* EffectGL::GetTextureParamFromCgSampler(
     CGparameter cg_sampler,
     const std::vector<ParamObject*> &param_objects) {
   DLOG(INFO) << "EffectGL GetTextureParamFromCgSampler";
   DLOG_ASSERT(cgGetParameterType(cg_sampler) != CG_SAMPLER);
   String sampler_name = cgGetParameterName(cg_sampler);
   String param_name = GetTextureNameFromSamplerParamName(sampler_name);
-  if (param_name.size() == 0) {
+  if (param_name.empty()) {
     // Sampler has no texture associated with it.
     return NULL;
   }
   // Find a matching Param with the same name as the CG_TEXTURE.
   for (unsigned int i = 0; i < param_objects.size(); ++i) {
     Param* param = param_objects[i]->GetUntypedParam(param_name);
     if (param && param->IsA(ParamTexture::GetApparentClass())) {
       // Success.
       DLOG(INFO) << "EffectGL Matched CG_SAMPLER \""
                  << sampler_name
@@ skipping 231 matching lines @@
 // Resets the render states back to their default value.
 void EffectGL::PostDraw(ParamCacheGL* param_cache_gl) {
   DLOG_FIRST_N(INFO, kNumLoggedEvents)
       << "EffectGL PostDraw \"" << name() << "\"";
   DCHECK(renderer_->IsCurrent());
   ResetShaderUniforms(param_cache_gl);
   CHECK_GL_ERROR();
 }
 
 }  // namespace o3d