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    <p>A few canonicals and pseudo-canonicals for <a href="/questions/tagged/haskell" class="post-tag" title="show questions tagged &#39;haskell&#39;" rel="tag">haskell</a>:</p> <p><a href="http://stackoverflow.com/q/35855170/2751851">Why shouldn't I mix tabs and spaces?</a></p> <p><a href="http://stackoverflow.com/q/42593284/2751851">Function definiton by special cases in GHCi</a></p> <p><a href="https://stackoverflow.com/q/48884276/2751851">Why doesn't this function work if I use “[xs]” instead of “xs”?</a></p> <p><a href="http://stackoverflow.com/q/39601008/2751851">Why can String not be used in a constraint?</a></p> <p><a href="http://stackoverflow.com/q/40432690/2751851">How to comfortably deal with the type system on Haskell?</a></p> <p><a href="http://stackoverflow.com/q/9027384/2751851">Haskell GHC: what is the time complexity of a pattern match with N constructors?</a></p> <p><a href="http://stackoverflow.com/q/11046590/2751851">the seq function and strictness</a></p> <p><a href="http://stackoverflow.com/q/30261346/2751851">List manipulation performance in Haskell</a></p> <p><a href="http://stackoverflow.com/q/40694437/2751851">Under what circumstances could Common Subexpression Elimination affect the laziness of a Haskell program?</a></p> <p><a href="http://stackoverflow.com/q/13042353/2751851">Does Haskell have tail-recursive optimization?</a></p> <p><a href="http://stackoverflow.com/q/13080606/2751851">Confused by the meaning of the 'Alternative' type class and its relationship to other type classes</a></p> <p><a href="http://stackoverflow.com/q/14299638/2751851">Existential vs. Universally quantified types in Haskell</a></p> <p><a href="http://stackoverflow.com/q/20870432/2751851">'type family' vs 'data family', in brief?</a></p> <p><a href="http://stackoverflow.com/q/22742001/2751851">What is pipes/conduit trying to solve</a></p> <p><a href="http://stackoverflow.com/q/3322540/2751851">How and why does the Haskell Cont monad work?</a></p> <p><a href="http://stackoverflow.com/q/30913145/2751851">What is the difference between Cabal and Stack?</a></p>
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    3. POEPUB to PDF conversion using calibre giving error
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      1. POHaskell GHC: what is the time complexity of a pattern match with N constructors?
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    1. CO@swish Yup, the use cases are quite specific. I only know it because I happened to stumble upon one of them recently.
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    2. CO`[(a, b)]` is a list of pairs, so your function is returning a list of lists of pairs rather than a list of pairs.
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      1. POReplacing explicit recursion with higher-order functions
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    3. COWhile this is more readable, the original snippet is syntactically valid. (I had no problems loading it from GHCi.)
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