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Update signal.mjs

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added pickr() and pickrmod()
This commit is contained in:
eefano 2024-02-18 15:30:24 +01:00
parent a468ddb85b
commit 12c6f4e95f
1 changed files with 27 additions and 3 deletions
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30
packages/core/signal.mjs
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@ -244,6 +244,30 @@ export const pickmodF = register('pickmodF', function (lookup, funcs, pat) {
return pat.apply(pickmod(lookup, funcs)); return pat.apply(pickmod(lookup, funcs));
}); });
/**
/** * Picks patterns (or plain values) either from a list (by index) or a lookup table (by name).
* Similar to `pick`, but restart() is invoked everytime a new index is triggered.
* In case of stacked indexes, collect() function is used to avoid multiple restarting triggers
* @param {Pattern} pat
* @param {*} xs
* @returns {Pattern}
*/
export const pickr = register('pickr', function (lookup, pat) {
return _pick(lookup.map((x)=>x.restart(pat.collect().fmap(v=>v+1))), pat, false).innerJoin();
});
/** * The same as `pickr`, but if you pick a number greater than the size of the list,
* it wraps around, rather than sticking at the maximum value.
* For example, if you pick the fifth pattern of a list of three, you'll get the
* second one.
* @param {Pattern} pat
* @param {*} xs
* @returns {Pattern}
*/
export const pickrmod = register('pickrmod', function (lookup, pat) {
return _pick(lookup.map((x)=>x.restart(pat.collect().fmap(v=>v+1))), pat, true).innerJoin();
});
/** /**
/** * Picks patterns (or plain values) either from a list (by index) or a lookup table (by name). /** * Picks patterns (or plain values) either from a list (by index) or a lookup table (by name).
* Similar to `pick`, but cycles are squeezed into the target ('inhabited') pattern. * Similar to `pick`, but cycles are squeezed into the target ('inhabited') pattern.
@ -258,7 +282,7 @@ export const pickmodF = register('pickmodF', function (lookup, funcs, pat) {
* s("a@2 [a b] a".inhabit({a: "bd(3,8)", b: "sd sd"})).slow(4) * s("a@2 [a b] a".inhabit({a: "bd(3,8)", b: "sd sd"})).slow(4)
*/ */
export const inhabit = register('inhabit', function (lookup, pat) { export const inhabit = register('inhabit', function (lookup, pat) {
return _pick(lookup, pat, true).squeezeJoin(); return _pick(lookup, pat, false).squeezeJoin();
}); });
/** * The same as `inhabit`, but if you pick a number greater than the size of the list, /** * The same as `inhabit`, but if you pick a number greater than the size of the list,
@ -270,8 +294,8 @@ export const inhabit = register('inhabit', function (lookup, pat) {
* @returns {Pattern} * @returns {Pattern}
*/ */
export const inhabitmod = register('inhabit', function (lookup, pat) { export const inhabitmod = register('inhabitmod', function (lookup, pat) {
return _pick(lookup, pat, false).squeezeJoin(); return _pick(lookup, pat, true).squeezeJoin();
}); });
/** /**