7 Julia correctness issues are now fixed.

Yuri Vishnevsky raised several correctness issues in his blog post Why I no longer recommend Julia. I was curious what has changed sinc and moved to test 7 issues mentioned in his blog.

• In each issue, I first paste the screenshot from the original post, then repeat the code in Jupyter.
• In conclusion, six have been solved. The 7th regarding “sum!, prod!, any!, and all!” is tricky because input and output on the same object is inherently dangerous.