This is one of the more-satisfying ruby expressions I've seen in a long time. I can't say that it also has prosaic transparency, but I think seeing it teaches important things.

x = -3 "++-"[x <=> 0] # => "-" x = 0 "++-"[x <=> 0] # => "+" x = 3 "++-"[x <=> 0] # => "+"

Other lifecycle functions are onMount, onDestroy, etc. It is arguably less obvious that setContext is such a lifecycle method.

If you update your pages and push to github, people revisiting the pages who have already got cached copies will not get the new pages without actually cleaning their browser cache. How can a script running in a page determine that it is stale and force an update?

for me it was because the browser use cached data(old styles) so i opend other brwser