

<br><br><br><br><br><br><br>

.forty-seven-left[
```scala
nowMillis()
// res: Long = 1616590118552L

nowMillis()
// res: Long = 1616590118554L
```
]

---
# 2. Defs without parameter

.sixty-two-left[
```scala mdoc:reset
def greeting(): Unit =
  println("Hello")

case class User(firstName: String, lastName: String) {
  def fullName: String =
    s"${firstName} ${lastName}"
}
```
]

--

.sixty-two-left[
```scala
greeting()
// Hello

User("John", "Doe").fullName
// res: String = "John Doe"
```
]

---
# 3. La