[lmi-commits] [lmi] master b7d99ed 1/5: Reserve memory all at once before appending to cell_parms()

[Greg Chicares]

branch: master
commit b7d99ede16c6d844d8f85279ae364a6366faa7a6
Author: Vadim Zeitlin <address@hidden>
Commit: Gregory W. Chicares <address@hidden>

    Reserve memory all at once before appending to cell_parms()
    
    This trivial optimization reduces the number of memory allocations,
    helping with both the run-time and memory consumption, when copying the
    new cells to cell_parms() after pasting data into a census.
---
 census_view.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/census_view.cpp b/census_view.cpp
index ea21aa5..1a9cda7 100644
--- a/census_view.cpp
+++ b/census_view.cpp
@@ -1773,6 +1773,7 @@ void CensusView::UponPasteCensus(wxCommandEvent&)
         }
 
     auto selection = cell_parms().size();
+    cell_parms().reserve(cell_parms().size() + cells.size());
     std::back_insert_iterator<std::vector<Input>> iip(cell_parms());
     std::copy(cells.begin(), cells.end(), iip);
     document().Modify(true);