cyclegraph: use vector empty() and clear()

diff --git a/cyclegraph.cc b/cyclegraph.cc
index 7632b0c9c591e44d3e1e42322ab44808142fd195..00b8cd85731800fcdfb3593147d2bbd5bd84ace4 100644 (file)
--- a/cyclegraph.cc
+++ b/cyclegraph.cc
@@ -240,33 +240,31 @@ bool CycleGraph::checkPromise(const ModelAction *fromact, Promise *promise) cons
 
 void CycleGraph::startChanges()
 {
-       ASSERT(rollbackvector.size() == 0);
-       ASSERT(rmwrollbackvector.size() == 0);
+       ASSERT(rollbackvector.empty());
+       ASSERT(rmwrollbackvector.empty());
        ASSERT(oldCycles == hasCycles);
 }
 
 /** Commit changes to the cyclegraph. */
 void CycleGraph::commitChanges()
 {
-       rollbackvector.resize(0);
-       rmwrollbackvector.resize(0);
+       rollbackvector.clear();
+       rmwrollbackvector.clear();
        oldCycles = hasCycles;
 }
 
 /** Rollback changes to the previous commit. */
 void CycleGraph::rollbackChanges()
 {
-       for (unsigned int i = 0; i < rollbackvector.size(); i++) {
+       for (unsigned int i = 0; i < rollbackvector.size(); i++)
                rollbackvector[i]->popEdge();
-       }
 
-       for (unsigned int i = 0; i < rmwrollbackvector.size(); i++) {
+       for (unsigned int i = 0; i < rmwrollbackvector.size(); i++)
                rmwrollbackvector[i]->clearRMW();
-       }
 
        hasCycles = oldCycles;
-       rollbackvector.resize(0);
-       rmwrollbackvector.resize(0);
+       rollbackvector.clear();
+       rmwrollbackvector.clear();
 }
 
 /** @returns whether a CycleGraph contains cycles. */