If you’re getting into Elm and still handling CSS files, just thrash them. Really. Go ahead and do it, because in Elm, we have the beautiful Elm-UI. You’ll get to write design in a language that’s actually understandable. However, Elm-UI probably still doesn’t have everything you might need. One simple thing it doesn’t have builtin is a dropdown, something you see everywhere.
Follow along and learn how to build a barebones dropdown with Elm and elm-ui. In part II, we’ll make a parameterized version using Elm’s powerful types. More specifically, you’ll master parameterized types! …
If you regularly work with remote, screenless machines, you probably regularly work with SSH too. SSH is great to access a machine, but what if it sits behind a router or firewall and you can’t change the rules? That’s what this is article is about: reverse tunnels!
The simplest scenario is a direct connection between host A and B. Let’s say A wants to SSH into B. You simply type
ssh username@B in a terminal in host A.
Simple enough. This is just a normal SSH connection. Let’s get into tunnels.
You use tunnels when you want to forward connections…
You do it like this:
unique : List a -> List a
unique l =
incUnique : a -> List a -> List a
intUnique elem lst =
case List.member elem lst of
True -> lst
False -> elem :: lst
List.foldr incUnique  l
There you go. Have fun!
Oh, still here? Let’s see what this is doing then.
So, you have a list in Elm and you want to get the unique values in it. And there is no way to write a simple imperative loop to iterate over the list. List.fold to the rescue. We…