Declarative CSV codecs
Add queries/updates/introspection to codec packages + fmt fixes
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lib/csvt.mli
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lib/csvt.mli
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(** Declarative CSV codecs.
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Csvt defines a generalized algebraic datatype whose values denote
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bidirectional maps between CSV data and the OCaml values of your choice.
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Field-level and row-level codecs share a single type {!t}. Row codecs are
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built declaratively using constructors and field accessors with the {!Row}
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builder. See
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bidirectional maps between CSV data and the OCaml values of your choice,
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following the {e finally tagged} approach from
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{{:https://github.com/dbuenzli/jsont/blob/main/paper/soup.tex}An alphabet
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for your data soups} by Daniel Bünzli. Field-level and row-level codecs
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share a single type {!t}. Row codecs are built declaratively using
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constructors and field accessors with the {!Row} builder. See
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{{:https://erratique.ch/repos/jsont/paper/soup.pdf}An alphabet for your data
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soups} for the technique.
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