added operator[]

include/hepnos/DataStore.hpp

@@ -24,6 +24,8 @@ class DataStore {
     
         ~DataStore();
 
+        DataSet operator[](const std::string& datasetName) const;
+
         class iterator;
         class const_iterator;
 

src/DataStore.cpp

@@ -271,6 +271,11 @@ DataStore::iterator DataStore::find(const std::string& datasetName) {
     return iterator(*this, DataSet(*this, 1, datasetName));
 }
 
+DataSet DataStore::operator[](const std::string& datasetName) const {
+    auto it = find(datasetName);
+    return std::move(*it);
+}
+
 DataStore::const_iterator DataStore::find(const std::string& datasetName) const {
     DataStore::iterator it = const_cast<DataStore*>(this)->find(datasetName);
     return it;

test/example.cpp

@@ -58,5 +58,7 @@ int main(int argc, char** argv) {
         dataset4.load(key, value);
         std::cout << "load(\"matthieu\") = " << value << std::endl;
     }
+    std::cout << "====== Testing operator[] =========" << std::endl;
+    std::cout << "datastore[\"myproject\"].fullname() = " << datastore["myproject"].fullname() << std::endl;
     return 0;
 }