REMOVE is the unused flag

Lesson map

Lesson 08. Map, example, EX054.

flowchart TD
  U["Fifth field, in use"] --> F{"Is the Boolean false?"}
  F -->|Yes| R["Append REMOVE"]
  F -->|No| K["No remove note from this test"]

The note reads the Boolean. It does not read the release date.

Logical drawing

photo-gallery  2.0.0  in use = False  age = 103 days
note produced: REMOVE (not in use)
age test for this row: 103 > 730 is false

Learning outcomes

After this chapter, you should be able to:

1. Tie the REMOVE note to the fifth field.
2. Show that photo-gallery's age does not produce that note.
3. Refuse a second print that waits for a later confirmation.

8.1 False means unused. The age of this row is a different test.

The third if is if not used. photo-gallery stores False. The appended text is exactly REMOVE (not in use). The words do not say vulnerable, abandoned, or advised. The age test for this row is 103 days, and 103 > 730 is false, so the UNMAINTAINED note is not added. A recent unused plugin and an old unused plugin receive the same REMOVE text. Age never enters this branch.

event-calendar is in use, so not used is false and REMOVE is not considered, even though its age note is present. newsletter is in use and receives neither note. The Boolean is not a count of pages that embed the gallery, and it is not a record of who was asked.

The later confirmation that nobody needs the gallery is a sentence Owen still has to settle. The tuple already says False. Editing the print after that conversation would hide the export the lab actually ran. A gallery stored as True would not receive REMOVE, however strongly someone wanted it gone. The flag is the field, not a wish written beside the file.

Lesson table; scroll horizontally to read all columns →

8.2 Worked example

Lesson table; scroll horizontally to read all columns →

Synthetic case. No person is named as the one who confirmed the gallery.

Errors and limits

Leave the unused Boolean as it was exported. The confirmation stays prose.

Apply

• EX054 — Which test. photo-gallery prints REMOVE, and its last release is 103 days before the review date. Does that age produce the note, and does a later confirmation that nobody needs the gallery change the line?
  Show marking criteria

  Rubric: 3 = no; REMOVE is not used; 103 fails the age test; the confirmation stays prose; the tuple stays False;; 2 = the Boolean produces the note and the line stays;; 1 = one fact;; 0 = none.