Great article! I'm especially glad to see "what have we gained?" in the FAQ, as it is probably the most frequently asked question I've heard.
OP - I noticed you were thorough enough to mention both Fantom and Kotlin in one section, so for the preceding section you might want to note that CoffeeScript also has a safe-invoke operator like Groovy's.
OP - I noticed you were thorough enough to mention both Fantom and Kotlin in one section, so for the preceding section you might want to note that CoffeeScript also has a safe-invoke operator like Groovy's.