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clean code is incredibly important but one of the easiest ways to ruin it is with tons of nesting which is where guard clauses come in any time that you have an if statement that wraps essentially your entire function what you can do is you can take that if statement and negate it so do the exact opposite so weamp;#39;ll check when the user is equal to null and then instead of running your code all you need to do is just do a simple return statement here and the rest of your code is just going to go underneath that if now as you can see this is much easier to read weamp;#39;re saying if the user is null do nothing otherwise run the rest of the code itamp;#39;s going to work exactly the same same thing down here we can do the exact same thing with two separate guard clauses so weamp;#39;re going to negate this so this is going to say equal null and then weamp;#39;re going to come in here with our return and weamp;#39;re going to put the rest of the code inside of that as you can s