Add ability to only draw data seperator after specific lines

[newhinton]

Add ability to only draw data seperator after specific lines

[freva]

Yes, exactly, the result of that stream is

[
    ["2024-02\n2024-01", "2\n2", "24\n21"], 
    ["2023-12\n2023-11", "2\n1", "3\n23"]
]

[freva]

Yes, it's possible if you do the grouping and then join each cell with newline before passing the data to the library. Here's a quick example:

record Entry(YearMonth yearMonth, int a, int b) {}
List<Entry> data = List.of(
        new Entry(YearMonth.of(2024, 2), 2, 24),
        new Entry(YearMonth.of(2024, 1), 2, 21),
        new Entry(YearMonth.of(2023, 12), 2, 3),
        new Entry(YearMonth.of(2023, 11), 1, 23));

BiFunction<List<Entry>, Function<Entry, Object>, String> joiner = (entries, mapper) -> entries.stream()
        .map(e -> mapper.apply(e).toString())
        .collect(Collectors.joining("\n"));

String[][] groupedData = data.stream()
        .collect(Collectors.groupingBy(e -> e.yearMonth().getYear() + "-" + ((e.yearMonth().getMonthValue() - 1) / 2), LinkedHashMap::new, Collectors.toList()))
        .values().stream()
        .map(entries -> new String[]{joiner.apply(entries, Entry::yearMonth), joiner.apply(entries, Entry::a), joiner.apply(entries, Entry::b)})
        .toArray(String[][]::new);

System.out.println(AsciiTable.getTable(groupedData));

prints

+---------+---+----+
| 2024-02 | 2 | 24 |
| 2024-01 | 2 | 21 |
+---------+---+----+
| 2023-12 | 2 |  3 |
| 2023-11 | 1 | 23 |
+---------+---+----+

[newhinton]

I can't quite figure out what your list-streaming ultimatively achieves. (It does not help that i am actually coding in kotlin. Converting to that seems to break something)

Am i correct in the understanding that you iterate the original data, group them by the first column, and then create a new "entry-object" (the map foom the goupeddata) that contains each grouping as a "single" cell where each row is just appended?

So that AsciiTable.getTable(groupedData) would recieve exactly 2 rows, given the example?

[newhinton]

Thank you!