Source code viewers to display parts of the same file side by side

Question

Are there any tools or IDE features to allow viewing of different parts of the same file side-by-side.

I've often thought this would be useful for analysing and refactoring duplicated code within a file.

Answer 1

In VisualStudio: Window Menu, split?

Answer 2

You could also use Beyond Compare.

Answer 3

Any programmers editor should support this - vim certainly does.

Answer 4

notepad++ -> view -> clone to another view

You can even synchronize scrolling of two different positions on same file.

Answer 5

I've used Beyond Compare for years and it is the best that I have found. Especially since you have the ability to do diffs as well as just look at the files. This tool is also the best that I have found for doing binary comparisons. Look at www.scootersoftware.com