How do use boolean? What do && do? and What does == do? Swift 5.1

Booleans are the item that tells weather it’s true or false. For example:
Is it sunny outside could return true or false depending on things.

var canYouSeeTheSun = true
var isItBrightOutSide = true

if canYouSeeTheSun == true && isItBrightOutSide == true
{
    print("It is suny outside")
}
else
{
    print("Bad weather today")
}

So in the above code we use “==“ double equals to see if a Boolean is true or false.
In the above example we also used the “&&” double ampersand. This will only be true if both booleans in the if statement are true.

When using && and have two conditions these are the results from their values.