This is how we did it at a telecom company as well. We just review the delta. If the delta is messy, then we look at the whole function or file.
Now I know about agile methods, I would recommend that you add a test case for each change. Add a test case and:
a) run the test case before making the change
b) change the code
c) run the test case again
I will also recommend re-factoring .
another approach is to do a code walkthrough. It is different from code review in that you take a use case (a scenario) and go through the code and see if the code will work. This is also faster than code-review.

In reply to Re^3: Howto best review code that has not been reviewed before? by podian
in thread Howto best review code that has not been reviewed before? by gumpu

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