Rustlings clippy2: Making code more readable with clippy linter suggestions

Chris Biscardi: [0:00] In clippy2, we have a mutable variable called res equal to 42, an optional variable that is Some 12 and a for loop over an optional value to add x to res. Then we println macro the result.

[0:14] Clippy tells us that we have a for loop over an optional type. This is more readably written as an if let statement. Let's rewrite it as an if let statement. Using if let, we can destructure x from the Some and the option and if it exists, add it to res.