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aup and Pure now have a bool (Pure 016): a view or column may be one.
vega_text writes it as true or false, as a string's interpolation does, so
every surface shows the same words: the CLI, the TUI's cells, speech and
the web surface's JSON (a value's text) and page. An app that wants other
words picks them with a conditional (if t.done { "done" } else { "" }).
The flags of the examples are bools: todo's done and urgent, today's done,
the stopwatch's running. vega.when takes the bool as it took the number.
bools checks a bool field and a bool column on the CLI, the TUI, speech
and the web surface: true and false, never 1 and 0.
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examples/shared-board.aup is the board grown in Pure's research 105:
each node sends a changed card whole to the other (send changed {
..at }) and takes the other's whole when it is the later change
(cards[k] = Card { ..remote }), by its time and then by the node's
name, so both boards end the same whatever order changes come in. The
input the other node sends to is the output's like (message like). A
new field goes in the card and the output alone.
tests/check.py shared_board runs Alice's and Bob's nodes linked both
ways over pure://, sealed, each taking the other as its sender: cards
added, moved and given on either agree; Bob cut off, both give one card
(Bob first, Alice after) and Bob adds one; joined again, both boards
take Alice's and Bob's card.
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examples/messenger.aup keeps the lines typed here and sends each to the
other node, and keeps the other's. The check runs Alice's and Bob's
nodes, each with a key of its own, sealing to the other's and taking
lines only from the other (pure-serve --key, --send, --seal, --sender),
each drawn by Vega in the node, with a relay between them: a line typed
on Alice's display reaches Bob's node and is drawn on his, Bob's answer
posted by a program is drawn on hers, each last frame is the one the
vega command draws from that node's store, and the relay saw no line's
text nor a field's name, only one sealed session each way naming the
sender's key.
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examples/board.aup is a kanban board: people add and move cards on
Vega's surfaces, programs post JSON to the same module served by
pure-serve, with no routes written. The checks write cards with the CLI
into a store, serve that store over HTTP where a program moves one and
adds another, and read it again with the CLI, the focus still on the
card it was on.
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The terminal and the web page set the time events see to the wall clock
and tick an app's timers on time: each round ticks what is due, draws,
then waits for input, a frame or the next tick, and a tick is news to
every open page at once. Scripts have no clock: time MS sets the time
the next events see and tick TIMER ticks, so an app that uses time
replays exactly. A module swap reschedules the timers.
examples/stopwatch.aup runs on every surface; the checks drive it by
script, on a pseudo-terminal by the clock, and on the web page.
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examples/tally.aup counts typed words in a list keyed by the word: the
screen stays sorted with each word once, typing a word again counts it
and moves the focus to it. It runs on the three surfaces with the other
examples, and vega check finds nothing in it.
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A list may now be filtered (each t in tasks where !t.done), and several
filtered lists over one list share one focus: the focus view names an
item, so Vega asks Pure which row shows it and highlights it only in the
list that holds it; the other lists have no focus (null in the web
surface's JSON, and the spoken surface names the item where it is). A
click or point on a row points at the item that row shows, and the wheel
on a list without the focus focuses the row under it. Pure's rows now
take a mutable app.
examples/today.aup shows what is open and what is done; its CLI output
matches a model over random adds, moves, toggles and points into either
list, and the web surface leaves the other list without a focus.
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The left field said how many tasks there were; it now says how many are
still open, "2 of 3", with aup's count(t in tasks where !t.done), which
Pure runs as a fold over the list on every surface. The reference model
counts the same, and in the browser the field follows a task marked done.
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Vega reads a verified Pure module by convention: a table view with a
label column is a list (with optional badge, detail and tone), any other
table is a table, <table>_focus is its focused row, a title view is the
title and other views are fields. lib/vega.aup gives aup apps the tones,
which say what a row means; each surface decides how it looks or sounds.
vega tui draws the screen in a terminal, keeps the focused row in view
and evaluates only the cells on screen; vega cli prints plain lines for
pipes; vega say speaks the screen and each focus change as sentences.
Display width handles Hangul, CJK, emoji, combining marks and controls.
tests/check.py compares the CLI and NUI output with a reference model of
examples/todo.aup line for line, checks 9,600 TUI frames for scrolling,
focus, badge alignment and the number of cells evaluated, drives the
interactive TUI on a pseudo-terminal, and runs every aup example on every
surface.
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