File RW

Dead simple I/O:

val file = root/"tmp"/"test.txt"
file.overwrite("hello")
file.appendLine().append("world")
assert(file.contentAsString() == "hello\nworld")

If you are someone who likes symbols, then the above code can also be written as:

import better.files.Dsl.SymbolicOperations

file < "hello"     // same as file.overwrite("hello")
file << "world"    // same as file.appendLines("world")
assert(file! == "hello\nworld")

Or even, right-associatively:

import better.files.Dsl.SymbolicOperations

"hello" `>:` file
"world" >>: file
val bytes: Array[Byte] = file.loadBytes

Fluent Interface:

 (root/"tmp"/"diary.txt")
  .createIfNotExists()
  .appendLine()
  .appendLines("My name is", "Inigo Montoya")
  .moveToDirectory(home/"Documents")
  .renameTo("princess_diary.txt")
  .changeExtensionTo(".md")
  .lines()