ABOUT THIS ARTICLE Racket's buildin library has remove procedure for immutable lists [link]. But the one for mutable lists is missing, so I created and test with some codes. ENVIRONMENT Operation has been tested in Racket v8.5. SAMPLES

ABOUT THIS ARTICLE Racket's official documents has do-loop syntax description [link]. But the description has no samples to aid our understanding. So I created some samples. ENVIRONMENT Operation has been tested in Racket v8.5. SAMPLES