What is it? The for special form, also known as a list comprehension, is a construct designed for concise and powerful enumerable transformation in Elixir. It looks very similar to a "for loop" in other languages like JavaScript and C, but rather than being a language construct, it is an expression (like everything else in Elixir). This means that it evaluates to a value that can be bound to a variable. You may have heard this before as "statement vs expression". last_names=forfriend<-friends...
