> In the case where your input is hashable, you could just do: > > let i = [.Red:0xff0000, .Green:0x00ff00, .Blue:0x0000ff][color]
You forgot to declare the type, which is mandatory if you want to use abbreviated cases like ".Red" to construct a one-off like that. That's one of the reasons I complained that using a Dictionary is not a pleasant alternative earlier on. The proposal ought to infer the enum Type, just like a normal Switch statement. On top of that, the limitations you mention also limit usefulness. If it weren't for these issues, it would be good enough for me.
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