Remove BOOST_FOREACH macro and replace range-based for

src/core/Environment.cpp

@@ -31,7 +31,6 @@
 #include "core/uid/SUID.h"
 
 #include <boost/algorithm/string.hpp>
-#include <boost/foreach.hpp>
 
 #include <algorithm>
 #include <functional>

src/core/cell/CellInterval.cpp

@@ -23,8 +23,6 @@
 #include "CellSet.h"
 #include "CellVector.h"
 
-#include <boost/foreach.hpp>
-
 
 namespace walberla {
 namespace cell {
@@ -51,7 +49,7 @@ bool CellInterval::overlaps( const CellVector& cellVector ) const
    if( empty() )
       return false;
 
-   BOOST_FOREACH( const Cell & cell, cellVector )
+   for( const Cell & cell : cellVector )
    {
       if( this->contains( cell ) )
          return true;

src/core/config/ConfigToBoostPropertyTree.cpp

@@ -21,7 +21,6 @@
 
 #include "ConfigToBoostPropertyTree.h"
 
-#include <boost/foreach.hpp>
 #include <boost/property_tree/ptree.hpp>
 
 
@@ -39,7 +38,7 @@ boost::property_tree::iptree configBlockHandleToBoostPropertyTree( const Config:
 	Config::Blocks blocks;
 	blockHandle.getBlocks(blocks);
 
-	BOOST_FOREACH( const Config::BlockHandle & handle, blocks )
+	for( const Config::BlockHandle & handle : blocks )
 		propTree.add_child( handle.getKey(), configBlockHandleToBoostPropertyTree( handle ) );
 
 	return propTree;

tests/geometry/VoxelFileTest.cpp

@@ -53,7 +53,7 @@
 #include "core/mpi/MPIManager.h"
 
 #include "core/Filesystem.h"
-#include <boost/foreach.hpp>
+
 #include <random>
 
 #ifdef _MSC_VER