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MeetMartin/filterMap-composition.js

Created October 19, 2020 21:27
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filterMap-composition.js
import {filterMap, includes, upperCaseOf, replace, map} from '@7urtle/lambda';
const itsATortoise = replace('TORTOISE')('TURTLE');
const composedMapper = compose(itsATortoise, upperCaseOf);
// the same as const mapper = a => itsATortoise(upperCaseOf(a));
const animals = ['Russian Turtle', 'Greek Turtle', 'House Cat'];
const onlyTurtles = includes('Turtle');
filterMap(onlyTurtles)(composedMapper)(animals);
// => ['RUSSIAN TORTOISE', 'GREEK TORTOISE']
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