Once control flow has been moved out of the current code block, any subsequent statements become effectively unreachable.

Why is this an issue?

Jump statements (return, break and next) move control flow out of the current code block. So any statements that come after a jump are dead code.

Noncompliant code example

def foo(a)
  i = 10
  return a + i    # Noncompliant
  i += 1          # dead code
end

Compliant solution

def foo(a)
  i = 10
  return a + i
end

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