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Re:Functional Programming in a Dysfunctional World by hijiri on Wednesday July 15, 2015 @02:47AM (#9890050)
Does anyone with a disqus account want to mention that the "Bool" in the type signature of isKey should be "Maybe Bool"?
Re:Functional Programming in a Dysfunctional World by hiroantagonist on Wednesday July 15, 2015 @03:08AM (#9890102)
I'm afraid the type signature is correct. Please refer to the following gist.

https://gist.github.com/anonymous/a0046e1ca87662a018f2