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# File 'lib/rust/core/types/matrix.rb', line 106
def inspect
row_names = @row_names || (0...self.rows).to_a.map { |v| v.to_s }
column_names = @column_names || (0...self.cols).to_a.map { |v| v.to_s }
separator = " | "
col_widths = column_names.map do |colname|
[
colname,
(
[colname ? colname.length : 1] +
@data.map {|r| r[column_names.index(colname)]}.map { |e| e.inspect.length }
).max
]
end.to_h
col_widths[:rowscol] = row_names.map { |rowname| rowname.length }.max + 3
result = ""
result << "-" * (col_widths.values.sum + ((col_widths.size - 1) * separator.length)) + "\n"
result << (" " * col_widths[:rowscol]) + 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"
@data.each_with_index do |row, i|
row_name = row_names[i]
row = column_names.zip(row)
index_part = "[" + (" " * (col_widths[:rowscol] - row_name.length - 3)) + "#{row_name}] "
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
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