If you're actually parsing a string, you may also want to look into one of 
the various parsing libraries like `elm-tools/parser`. If you're willing to 
give a few more details about the format of those strings, I'm sure people 
here (and on slack) would be more than willing to give you a hand in 
figuring things out.

Another alternative, in the same vein as Peter's proposals but including 
more crimes against humanity (and loosely resembling Haskell's guard 
syntax) is this one: https://ellie-app.com/46bdfm75sqja1/0

Op dinsdag 22 augustus 2017 14:46:11 UTC+2 schreef David Legard:
>
> Does Elm have anything between an *if-then-else* flow control and* case* ?
>
> My use case is, I need to parse a string in various ways to decide which 
> Analysis ADT to assign to the string.
>
> Thus
>
> sconvert : String -> Analysis
> sconvert s =
>      if s=="all" then AllDays
>      else if s=="unplayed" then Unplayed
>      else if String.startsWith "onday" s then OnDay (secondBit s)
>      else if String.contains "totz:" s then Totz (secondBit s)
>      else Unknown
>
>
> There are about 30 different branches in my app, and it's convenient to 
> keep them together.
>
> I can't use a case expression here, so I guess what I'm looking for is 
> something like F#'s match expression, where you can add conditions using 
> the when modifier. (code written as if the function existed in Elm
>
> fizzBuzz : Int -> String
> fizzBuzz x = 
>     match x with 
>     | i when i % 15 = 0 ->  "fizzbuzz" 
>     | i when i % 3 = 0 -> "fizz" 
>     | i when i % 5 = 0 ->  "buzz" 
>     | i  -> toString(i)
>
> What would be an elegant way to implement the fizzBuzz function in Elm?
>       
>

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