Refactored duplicated logic in setDT and [,:=] to use a helper function

Author: nipun-gupta-3108

.github/workflows/performance-tests.yml

@@ -21,3 +21,5 @@ jobs:
       repo_token: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - uses: Anirban166/[email protected]
+      - name: Checkout branch
+        run: git checkout refactor-helper-function-issue-6702 || echo "Branch not found"