Download as PDF, PPTX
Uploaded byBoldRadius Solutions
String Interpolation in Scala | BoldRadius
The document discusses string interpolation in Scala, highlighting error handling for unclosed string literals and providing examples of different types of interpolators like simple, formatted, raw, and SQL interpolators. It includes code snippets illustrating how to concatenate strings and format output using the current time and user name. Additionally, it suggests building custom interpolators using StringContext.
String Interpolation in Scala | BoldRadius
- 1.
- 2. WHY? error: unclosedstring literal
- 3. WHY? "Hello "+ user + ", the time is " + now + better hurry up!"
- 4. An example importSystem.{currentTimeMillis => now} val user = "Kevin” val m = "Hello " + user + ", the time is " + now + better hurry up!" // Hello Kevin, the time is 1429017560259 better hurry up!
- 5. Enter string interpola-on import System.{currentTimeMillis => now} val user = "Kevin” val m = s"Hello $user, the time is $now better hurry up!" // Hello Kevin, the time is 1429017560259 better hurry up
- 6. Built-‐in interpolators s"Simplestring interpolation, $user" f"Formatted interpolation: $balance%5.2f" raw"Raw respects t escaped n literals"
- 7. Slick implements interpolators sql"select * from books where id = $id" sqlu""" delete from products where expiration > $date """
- 8. Build your own! StringContext hBp://docs.scala-‐lang.org