July 2022

Parsing with Haskell (Part 1): Lexing with Alex This is the first of the two parts of our Parsing with Haskell series. Looking for the second part instead? You can find it here. This two-part tutorial will look into two tools often used together by Haskellers to parse programs: Alex and Happy. We’ll use them to parse a small programming language from scratch. Both Alex and Happy are industrial-strength tools powerful enough to parse even Haskell itself. At […]

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Parsing with Haskell (Part 2): Parsing with Happy This is the second and final part of the Parsing with Haskell series. If you haven’t read the first part yet, you can find it here. In this article, we will use Happy to generate a parser that will consume the token stream from the lexer created by Alex. As with Alex, our goal is to provide enough information to be productive. Hence, we won’t cover all the features of […]

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The paper by Marek et al (Reproducible brain-wide association studies require thousands of individuals, Nature, 602, 7902, pp 654-660, 2022) came out recently, and caused a bit of a stir in the field for a couple of reasons: First, the title, while an accurate description of the findings of the paper, is bold and lacking just enough qualifiers to quell immediate questions. “Does this imply that fMRI or other measures used in BWAS are lacking intrinsic sensitivity?” “Is […]

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