Monoids for Java Developers
John McClean
842

Small typo in the second line — Had to tripple check myself to make sure I wasn’t missing something.

concat.apply(concat.apply("hello","world"),"c") = "helloworldc"
concat.apply("hello",concat.apply("world","c")) = "hellowoldc"
One clap, two clap, three clap, forty?

By clapping more or less, you can signal to us which stories really stand out.