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Текущая директория: /opt/BitGoJS/node_modules/fp-ts/es6
Просмотр файла: FoldableWithIndex.js
/**
* A `Foldable` with an additional index.
* A `FoldableWithIndex` instance must be compatible with its `Foldable` instance
*
* ```ts
* reduce(fa, b, f) = reduceWithIndex(fa, b, (_, b, a) => f(b, a))
* foldMap(M)(fa, f) = foldMapWithIndex(M)(fa, (_, a) => f(a))
* reduceRight(fa, b, f) = reduceRightWithIndex(fa, b, (_, a, b) => f(a, b))
* ```
*
* @since 2.0.0
*/
import { getFoldableComposition } from './Foldable';
import { pipe } from './function';
export function reduceWithIndex(F, G) {
return function (b, f) { return function (fga) {
return F.reduceWithIndex(fga, b, function (i, b, ga) { return G.reduceWithIndex(ga, b, function (j, b, a) { return f([i, j], b, a); }); });
}; };
}
export function foldMapWithIndex(F, G) {
return function (M) {
var foldMapWithIndexF = F.foldMapWithIndex(M);
var foldMapWithIndexG = G.foldMapWithIndex(M);
return function (f) { return function (fga) { return foldMapWithIndexF(fga, function (i, ga) { return foldMapWithIndexG(ga, function (j, a) { return f([i, j], a); }); }); }; };
};
}
export function reduceRightWithIndex(F, G) {
return function (b, f) { return function (fga) {
return F.reduceRightWithIndex(fga, b, function (i, ga, b) { return G.reduceRightWithIndex(ga, b, function (j, a, b) { return f([i, j], a, b); }); });
}; };
}
/** @deprecated */
export function getFoldableWithIndexComposition(F, G) {
var FC = getFoldableComposition(F, G);
var _reduceWithIndex = reduceWithIndex(F, G);
var _foldMapWithIndex = foldMapWithIndex(F, G);
var _reduceRightWithIndex = reduceRightWithIndex(F, G);
return {
reduce: FC.reduce,
foldMap: FC.foldMap,
reduceRight: FC.reduceRight,
reduceWithIndex: function (fga, b, f) { return pipe(fga, _reduceWithIndex(b, f)); },
foldMapWithIndex: function (M) {
var foldMapWithIndexM = _foldMapWithIndex(M);
return function (fga, f) { return pipe(fga, foldMapWithIndexM(f)); };
},
reduceRightWithIndex: function (fga, b, f) { return pipe(fga, _reduceRightWithIndex(b, f)); }
};
}
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