Comparable

Returns true if the left value is ordered before or the same as the right value.

Returns true if the left value is ordered after or the same as the right value.

Increases the value of self so that falls at or above minimum.

This is accomplished by changing self to match the value of minimum if and only if self does not already satisfy self ≥ minimum.

For example:

let numberOfRolls = 5
var highestRoll = 1
for _ in 1 ... numberOfRolls {
    highestRoll.increase(to: rollDie())
}
print("After rolling the die \(numberOfRolls) time(s), the highest roll was \(highestRoll).")
// Prints, for example, “After rolling the die 5 time(s), the highest roll was 4.”

// In this example, rollDie() represents a function that randomly returns an Int between 1 and 6 inclusive. In each iteration of the for loop, a new random number is generated, and if it is greater than highestRoll’s existing value, increase(to:) changes highestRoll to reflect the new high.

Decreases the value of self so that falls at or below maximum.

This is accomplished by changing self to match the value of maximum if and only if self does not already satisfy self ≤ maximum.

For example:

let numberOfRolls = 5
var lowestRoll = 6
for _ in 1 ... numberOfRolls {
    lowestRoll.decrease(to: rollDie())
}
print("After rolling the die \(numberOfRolls) time(s), the lowest roll was \(lowestRoll).")
// Prints, for example, “After rolling the die 5 time(s), the lowest roll was 2.”

// In this example, rollDie() represents a function that randomly returns an Int between 1 and 6 inclusive. In each iteration of the for loop, a new random number is generated, and if it is less than lowestRoll’s existing value, decrease(to:) changes lowestRoll to reflect the new low.

Returns true if lhs is within the range described by rhs.

if 1 ÷ 3 ≈ 0.33333 ± 0.00001 {
    print("It is accurate to at least four digits.")
}

Returns true if the left value is less than the right.