Scala: write string to file in one statement

user_479805 0
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For reading files in Scala, there is 

Source.fromFile("file.txt").mkString

Is there an equivalent and concise way to write a string to file?

Most languages support something like that. My favorite is Groovy:

def f = new File("file.txt")
// Read
def s = f.text
// Write
f.text = "file contents"

I'd like to use the code for programs ranging from a single line to a short page of code. Having to use your own library doesn't make sense here. I expect a modern language to let me write something to a file conveniently.

There are posts similar to this, but they don't answer my exact question or are focused on older Scala versions.

For example:

scala-2.9 scala
17 Answers

Use ammonite ops library. The syntax is very minimal, but the breadth of the library is almost as wide as what one would expect from attempting such a task in a shell scripting language like bash.

On the page I linked to, it shows numerous operations one can do with the library, but to answer this question, this is an example of writing to a file

import ammonite.ops._
write(pwd/"file.txt", "file contents")
user_20896750

Here's the modern, safe one liner:

java.nio.file.Files.write(java.nio.file.Paths.get("/tmp/output.txt"), "Hello world".getBytes());

nio is a modern IO library shipped by default with the JDK 9+ so no imports or dependencies required.

Philluminati_254660

os-lib is the best modern way to write to a file, as mentioned here.

Here's how to write "hello" to the file.txt file.

os.write(os.pwd/"file.txt", "hello")

os-lib hides the Java ugliness and complexity (it uses the Java libs under the hood, so it's just as performant). See here for more info about using the lib.

user_11251590 
import java.nio.file.{Files, Paths}

Files.writeString(
   Paths.get(theFilePathString),
   thePayloadString
)

(UTF-8 implicitly)

since Java 11

user_2158380
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