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Added explanation of `and` vs `&&` rule

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1 parent 6dbfd96 commit 24db39885f5c98c85500c858e4b56a68329a3ca0 @bradwright bradwright committed Mar 14, 2013
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@@ -163,6 +163,8 @@
Do not use `and`/`or` if the left-hand side of the expression is more
complicated than a simple method call. Consider in the case above
whether the exception could better be handled in save_changes.
+ [Explanation of the difference between `&&` and `and`](
- Avoid multi-line `?:` (the ternary operator), use `if/unless`

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