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Version Differences

What is a version? In contrary to change which can develop in time, a version is a fixed state of code. In terms of source control a version is denoted with a tag, while change is a branch. These fixed states of code are useful for
  • reproducing released versions any time later
  • ensuring that a checked out version is always exactly the same as it was when accepted for production
  • identifying which changes are included and tasks implemented in given code

Version differences ease finding out the changes between two versions – this could manually be quite a sophisticated task, given that the branching model is highly parallel. For example a higher version number does not automatically guarantee a task that is known to be implemented in a version with lower number to be implemented in given version too.


You can access version differences page through menu: Version -> Differences.



Version differences do not carry any value per se, it's the usage that does. The most common usages for version differences are:

  • Testers get a new test versions and they want to know what has been implemented since previous test version – so they query the differences between two versions and verify listed tasks.
  • Release managers doing an acceptance want to find out whether all the tasks implemented since previous production version are verified.
  • Your clients request for a changelog because they want to see what has changed since previous version given to them.
  • Product managers want to analyze the impact of a whole release to see if it won't break any dependent systems.
  • Integrators or developers performing a base version update need to compare edits made within a change to edits made within mainline.

The version differences can be presented as a list of changes and tasks implemented by them:



Another view of the differences is as a list of files linking to diffs of the files between given versions (similar to diff of an individual chage):



NOTE: as this list is based on uploaded diffs of individual changes, this view may be slightly incomplete due to possible editing of otherwise untouched files during integration.