What is the method for manually merging code changes?

The typical steps for manually merging code generally include:

1. Before merging the code, it is essential to identify the two code branches or versions to be merged and understand the differences between them.
2. Manually merge code: Merge code line by line or in sections based on the differences between two code branches or versions. Use tools or editors provided by version control systems to assist in merging the code.
3. Resolve conflicts: Conflicts may arise during the process of merging code, where the same line or section of code has different modifications in two branches. It is important to carefully review and address these conflicts to ensure that the merged code functions properly.
4. Test code: after merging, it is necessary to conduct code testing to ensure that merging has not introduced any new issues or bugs.
5. Submit the merged code: Finally, submit the merged code to the version control system so that other members of the team can access and use the updated code.