Sometimes I'll need something like:
if value == Foo then Bar else value
Or some syntactic variation thereof:
case value of { Foo -> Bar; _ -> value }
Is there a better/shorter way to do it? I'm surprised that it's more
complicated to substitute a value on its own than e.g. in a list, using
filter. Or perhaps I'm missing the right abstraction?
Thanks,
Alvaro
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