HLint failed with status: 1. Warning (3), Suggestion (7)

Suggestion in testEmptyResultSet in module PersistentTests: Use null ▫︎ Found: "length cols > 0" ▫︎ Perhaps: "not (null cols)" ▫︎ Note: increases laziness

Warning in camelToSnake in module DataFrame.IO.Persistent.TH: Use isAsciiUpper ▫︎ Found: "c >= 'A' && c <= 'Z'" ▫︎ Perhaps: "isAsciiUpper c"

Suggestion in deriveEntityToDataFrame in module DataFrame.IO.Persistent.TH: Use : ▫︎ Found: "[instanceDec] ++ concat dataframeExprs" ▫︎ Perhaps: "instanceDec : concat dataframeExprs"

Suggestion in deriveEntityToDataFrame in module DataFrame.IO.Persistent.TH: Redundant bracket ▫︎ Found: "\" :: Expr \" <> (show ty)" ▫︎ Perhaps: "\" :: Expr \" <> show ty"

Suggestion in deriveEntityToDataFrame in module DataFrame.IO.Persistent.TH: Redundant bracket ▫︎ Found: "((nm <> \" :: Expr \" <> (show ty)))" ▫︎ Perhaps: "(nm <> \" :: Expr \" <> (show ty))"

Warning in toPersistent in module DataFrame.IO.Persistent: Redundant return ▫︎ Found: "do let rowCount = nRows df\n keys <- forM [0 .. rowCount - 1]\n $ \\ i\n -> do case rowToEntity i df of\n Left err\n -> error $ \"Failed to convert row \" <> show i <> \": \" <> err\n Right entity -> insert (entityVal entity)\n return keys" ▫︎ Perhaps: "do let rowCount = nRows df\n forM [0 .. rowCount - 1]\n $ \\ i\n -> do case rowToEntity i df of\n Left err\n -> error $ \"Failed to convert row \" <> show i <> \": \" <> err\n Right entity -> insert (entityVal entity)"

Warning in module DataFrame.IO.Persistent: Unused LANGUAGE pragma ▫︎ Found: "{-# LANGUAGE BangPatterns #-}"

Suggestion in main in module Main: Redundant $ ▫︎ Found: "HT.asTensor $ testLabels" ▫︎ Perhaps: "HT.asTensor testLabels"

Suggestion in main in module Main: Redundant $ ▫︎ Found: "HT.asTensor $ trainLabels" ▫︎ Perhaps: "HT.asTensor trainLabels"