Method: Rust::DataFrame#inspect

Defined in:
lib/rust/core/types/dataframe.rb

#inspect ⇒ Object 



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# File 'lib/rust/core/types/dataframe.rb', line 284

def inspect
    separator = " | "
    col_widths = self.column_names.map { |colname| [colname, ([colname.length] + @data[colname].map { |e| e.inspect.length }).max] }.to_h
    col_widths[:rowscol] = (self.rows - 1).inspect.length + 3
    
    result = ""
    result << "-" * (col_widths.values.sum + ((col_widths.size - 1) * separator.length)) + "\n"
    result << (" " * col_widths[:rowscol]) + self.column_names.map { |colname| (" " * (col_widths[colname] - colname.length)) + colname }.join(separator) + "\n"
    result << "-" * (col_widths.values.sum + ((col_widths.size - 1) * separator.length)) + "\n"
    self.each_with_index do |row, i|
        index_part = "[" + (" " * (col_widths[:rowscol] - i.inspect.length - 3)) + "#{i}] "
        row_part   = row.map { |colname, value| (" " * (col_widths[colname] - value.inspect.length)) + value.inspect }.join(separator)
        
        result << index_part + row_part + "\n"
    end
    
    result << "-" * (col_widths.values.sum + ((col_widths.size - 1) * separator.length))
    
    return result
end