Ignore code evaluation output in org-mode

Question

Is it possible to set a header setting in a org file to indicate that when I eval any source code block in the file it shouldn't change the file contents? I don't want that default #+RESULTS: block that's added by default below the code block.

Answer 1

Add this at the top of the file:

#+PROPERTY: header-args    :results silent

From the documentation on using header arguments.