[minor syntax/markup edits] One that has caught my fancy are various uses of the "Whatever Star". This appears as a * in a few contexts. In many it is really a

[minor syntax/markup edits] One that has caught my fancy are various uses of the "Whatever Star". This appears as a * in a few contexts. In many it is really a shortcut for the "Whatever" class, so you can use it in function signatures to enter sort of "automatic mode". @shuffled_names = @names.pick(*) # randomly pick... however many you have. whatever. But I think more interesting and different than that is using whatever-star as an automatic lambda thing. @nums.map(*/2 + 3) # expression-lambda from context around a whatever-star @nums.map( -> $n { $n/2 + 3 } ) # equivalent with a real stabby arrow lambda @nums.map( { $^n/2 + 3 } ) # $^n is a generated alphabetical-positional argument I suppose this isn't really fundamental... but is definitely different.