io

type CSVOptions struct {
	Delimiter     rune
	HasHeader     bool
	SkipRows      int
	MaxRows       int      // 0 for unlimited
	Columns       []int    // Specific columns to read, empty for all
	NullValues    []string // Strings to treat as NaN
	StreamingMode bool     // For large files
}

type DataInfo struct {
	Rows         int
	Columns      int
	Headers      []string
	HasMissing   bool
	MissingCount int
	DataTypes    []string // inferred types per column
}

type StreamingReader struct {
	// contains filtered or unexported fields
}