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pick, pickmod, inhabit, inhabitmod (#921)

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* the args for `pick` are now reversed as standard (old behaviour still supported to avoid breaking change)
* `pick` is also now a pattern method
* `pick` now also accepts a lookup table for pick-by-name as an alternative to pick-by-index from a list
* `inhabit` added with same behaviour as `pick`, except cycles from source patterns are squeezed into events of inhabited patterns
* Also some general doc tidying, sorry for the noise..
* There is also `pickmod` and `inhabitmod`, for wrapping indexes around rather than clamping them
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Alex McLean 2024-01-18 17:08:29 +00:00 • committed by GitHub
parent a8db707440
commit 98b7859605
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6 changed files with 263 additions and 46 deletions
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60
packages/core/test/pattern.test.mjs
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@ -46,6 +46,7 @@ import {
rev,
time,
run,
pick,
} from '../index.mjs';
import { steady } from '../signal.mjs';
@ -1057,4 +1058,63 @@ describe('Pattern', () => {
expect(slowcat(0, 1).repeatCycles(2).fast(6).firstCycleValues).toStrictEqual([0, 0, 1, 1, 0, 0]);
});
});
describe('inhabit', () => {
it('Can pattern named patterns', () => {
expect(
sameFirst(
sequence('a', 'b', stack('a', 'b')).inhabit({ a: sequence(1, 2), b: sequence(10, 20, 30) }),
sequence([1, 2], [10, 20, 30], stack([1, 2], [10, 20, 30])),
),
);
});
it('Can pattern indexed patterns', () => {
expect(
sameFirst(
sequence('0', '1', stack('0', '1')).inhabit([sequence(1, 2), sequence(10, 20, 30)]),
sequence([1, 2], [10, 20, 30], stack([1, 2], [10, 20, 30])),
),
);
});
});
describe('pick', () => {
it('Can pattern named patterns', () => {
expect(
sameFirst(
sequence('a', 'b', 'a', stack('a', 'b')).pick({ a: sequence(1, 2, 3, 4), b: sequence(10, 20, 30, 40) }),
sequence(1, 20, 3, stack(4, 40)),
),
);
});
it('Can pattern indexed patterns', () => {
expect(
sameFirst(
sequence(0, 1, 0, stack(0, 1)).pick([sequence(1, 2, 3, 4), sequence(10, 20, 30, 40)]),
sequence(1, 20, 3, stack(4, 40)),
),
);
});
it('Clamps indexes', () => {
expect(
sameFirst(sequence(0, 1, 2, 3).pick([sequence(1, 2, 3, 4), sequence(10, 20, 30, 40)]), sequence(1, 20, 30, 40)),
);
});
it('Is backwards compatible', () => {
expect(
sameFirst(
pick([sequence('a', 'b'), sequence('c', 'd')], sequence(0, 1)),
pick(sequence(0, 1), [sequence('a', 'b'), sequence('c', 'd')]),
),
);
});
});
describe('pickmod', () => {
it('Wraps indexes', () => {
expect(
sameFirst(
sequence(0, 1, 2, 3).pickmod([sequence(1, 2, 3, 4), sequence(10, 20, 30, 40)]),
sequence(1, 20, 3, 40),
),
);
});
});
});