August 7, 2013

Haskell Weekly News: Issue 275

Welcome to issue 275 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of July 28 to August 3, 2013.

Quotes of the Week

  • littlecalculist: combinatorics. n. math's way of punishing you for failing to use abstraction.
  • dmwit: ?let instance Num Bool where (+) = (/=); (*) = (&&); negate = id; abs = id; signum = id; fromInteger = odd
  • edwardk: clearly it should be \x -> x <$ do f . g $ x. do is a magical () killing machine
  • dmwit: Type families are not injective. Your first three inscrutable error messages with type families in them will be because you don't understand this rule.
  • elliott: halting problem, n. the property which makes stating anything about programs impossible, according to at least one person in any room
  • carmack: Everything that is syntactically legal that the compiler will accept will eventually wind up in your codebase.

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Until next time,
+Daniel Santa Cruz

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