Resolve clang-tidy warnings=error; Notable std::vector<>: size() -> size_t (unsigned) but iterator and difference_type are signed and losing half of range

Because std::vector<>::begin() iterator performs arithmetic
using a signed difference_type, we need to use such a signed type
here to avoid `bugprone-narrowing-conversions` (LINT)

Now, isn't this odd as std::vector<>::size() uses unsigned size_type,
aka size_t and mentioned iterator hence lose half the value range possible?

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lesson02a_arithmetic.cpp b/src/lesson02a_arithmetic.cpp
index 2009b77..e83eb88 100644
--- a/src/lesson02a_arithmetic.cpp
+++ b/src/lesson02a_arithmetic.cpp
@@ -91,6 +91,7 @@ float machineEpsilon() {
         // std::cerr << i << ": " << res << " -> " << x << std::endl;
         ++i;
     } while ( one + x  > one );
+    (void)i;
     return res;
 }