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_Codemonkeyism

Shameless self plug

"Comparing Optionals and Null in Swift, Scala, Ceylon and Kotlin"

http://codemonkeyism.com/comparing-optionals-and-null-in-swi...

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> AUGUST 28, 2015 [...] I did not include Groovy [...] because I currently have no interest in Groovy.

Tsssk, tssk, you wrote that on the 12th anniversary of the Groovy creator's announcement of the language at http://radio-weblogs.com/0112098/2003/08/29.html

FYI your Scala example doesn't work.

    Welcome to Scala version 2.11.6 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_45).

    scala> var h:Option[String] = "Hello".some
    <console>:7: error: value some is not a member of String
       var h:Option[String] = "Hello".some

The author is using the scalaz syntax, you could substitute it for the "vanilla" syntax:

    var h: Option[String] = Option("Hello")

or import scalaz (in case you have it in your classpath etc):

    import scalaz._, Scalaz._
    var h: Option[String] = "Hello".some

Sorry, as the other comment mentioned this is Scalaz as it makes code IMHO a little more readable. The example was more about the h:Option[String] part.

Also swift has '??' As well as optional binding.

What is the `nice` language you refer to?

This is an old JVM language

http://nice.sourceforge.net/

I've included nice as it had a different syntax for optionals (?Type instead of Type?) which I found interesting. I was interested in Nice back in the day.

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