How to use the pipe function from ramda
Find comprehensive JavaScript ramda.pipe code examples handpicked from public code repositorys.
ramda.pipe is a function that allows you to combine multiple functions into a single function that can be executed in sequence.
GitHub: uselagoon/lagoon
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return { willSendResponse: data => { const { response } = data; newrelic.addCustomAttribute( 'errorCount', R.pipe( R.propOr([], 'errors'), R.length )(response) );
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const toUsername = R.compose( capturingGroups, R.match(/^(?:@|(?:https?:\/\/)?(?:t\.me|telegram\.(?:me|dog))\/)(\w+)/i), ); const customWhitelist = R.pipe( R.chain(toUsername), R.map(R.toLower), R.constructN(1, Set), )(excludeLinks);
How does ramda.pipe work?
ramda.pipe
is a function that takes one or more functions as arguments and returns a new function that, when called with an input, applies each function to the input in a left-to-right order, passing the result of each function call to the next function in the pipeline until the final result is returned.
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const marked = require('marked'); const version = require('./package.json').devDependencies.ramda; const versionExtension = require('../ramda-extension/package.json').version; const prettifyCode = R.pipe( R.join('\n'), (x) => prettier.format(x, { parser: 'babel',
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GitHub: ayush-rudani/npmBox
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* @param {* , function} fn nth function from left side of argument list restricted to take only one argument. * * @return returns final result be it a value or a curried function. */ const f = R.pipe(Math.pow, R.negate, R.inc); f(3, 4); //=> -(3^4) + 1 /* excution : Math.pow -> R.negate -> R.inc . *
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Ai Example
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const R = require("ramda"); const numbers = [1, 2, 3, 4, 5, 6]; const result = R.pipe( R.filter((n) => n % 2 === 0), // Filter out odd numbers R.map((n) => n * 2), // Double even numbers R.sum // Sum up the result )(numbers); console.log(result); // Output: 20
In this example, ramda.pipe is used to create a function that takes the original array of numbers and applies the filtering, mapping, and summing operations in sequence. The result of calling the function with the numbers array is 20.
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} )(allChapters); const otherDir = path.resolve(__dirname, "../other"); const interactiveDemo = path.join(otherDir, "interactive-demo.md"); R.pipe(execMarkdownToHtml)(interactiveDemo); }; module.exports = { buildAllHtml };
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* |(function(*, *, *, *): *)|(function(*, *, *, *, *): *)|*} * */ const pipePromise = R.pipe(R.unapply(R.flatten), R.flip(pipePromise_)) const curry2AndFlip = R.pipe(R.curryN(2), R.flip) const hash = obj => sha1(JSON.stringify(obj)) function pathsHaveData (list, obj) {
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}, []) return [...paths, ...nestedPaths] } const scopes = R.pipe( R.reduce(allPathCombinations, []), R.sort((a, b) => a.localeCompare(b)), R.uniq, R.addIndex(R.map)((name, index) => {
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<blockquote><pre><code class="language-javascript"> var negative = x => -1 * x; var increaseOne = x => x + 1; var f = R.pipe(Math.pow, negative, increaseOne);
GitHub: madoos/adt-workshop
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const VERTICAL_SEPARATOR = `${EOL}${revealOpt.verticalSeparator}${EOL}`; const SEPARATOR = `${EOL}${revealOpt.separator}${EOL}`; const SLIDES_PATH = join(__dirname, './slides.md'); const isMdFile = name => name.includes('.md'); const folders = pipe( unary(readdirSync), reject(isMdFile) );
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: source.parent; if (source.identifierType instanceof Object) { result.identifierType = { ...source.identifierType, id: ramda.pipe( ramda.pathOr(undefined, ['identifierType', 'id']), (id) => (id ? id.trim() : id) )(source), };
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const getWhoFilePath = tableName => `${__dirname}/tables/${tableName}_zscores.json`; const loadWhoFiles = R.pipe(getWhoFilePath, R.pipeP(fs.readFile, JSON.parse)); const allowedIndexKeys = ['Length', 'Height', 'Month', 'Week']; const operativeIndexKey = R.pipe(R.keysIn, R.intersection(allowedIndexKeys), R.head); const reIndex = R.indexBy(R.chain(R.prop, operativeIndexKey)); // find first allowed index key within object keys — this is the operative index key // index by the values of the operative index key
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const nameToContent = (acc, name) => R.assoc(shortName(name), R.trim(readFile(name)), acc); const loadSql = (location) => { const files = fs.readdirSync(location); const load = R.pipe( R.filter(sqlFile), R.map(join(location)), R.reduce(nameToContent, {}) );
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} return value && value.value ? value.value : value; // TODO move to sql adapter }; const transformData = (aliasToMemberNameMap, annotation, data) => (data.map(r => R.pipe( R.toPairs, R.map(p => { const memberName = aliasToMemberNameMap[p[0]]; const annotationForMember = annotation[memberName];
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const f = R.pipe( // group by Language Type R.groupBy(R.prop("linter")), R.converge( R.zipWith((k, v) => ({ [k]: R.pipe( // then group by the file R.groupBy(R.prop("file")), R.converge( R.zipWith((k, v) => ({
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const outFile = 'data/tunes.json' const getJson = url => fetch(url).then(response => response.json()) const transformTunes = R.pipe( // there are bugs in the data, ignore records where the tune id is not a number R.filter(tune => parseInt(tune.tune).toString() === tune.tune), R.map(tune => ({ id: tune.tune,
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GitHub: raine/flyd-keyboard
![raine profile picture](/raine.png?size=40)
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var _require2 = require('ramda'); var __ = _require2.__; var liftN = _require2.liftN; var curry = _require2.curry; var pipe = _require2.pipe; var always = _require2.always; var merge = _require2.merge; var props = _require2.props; var apply = _require2.apply;
GitHub: corporatepiyush/es6
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//pipe (like Unix pipe) works from left to right //also observe all operation are functions and curry placeholder // over engineered code const sumUsingPipe = _.pipe( _.filter(_.compose(_.identical(1), _.modulo(_.__, 2))), _.map(_.converge(_.multiply, [_.identity, _.identity])), // dont try this at home _.reduce(_.add, 0) )
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}, countries); }); }; exports.getCountry = getCountry; var getTopCountry = (0, _reselect.createSelector)(getCountries, R.pipe(R.sort(R.descend(R.prop('weight'))), R.head)); exports.getTopCountry = getTopCountry; var getHotelsStore = (0, _reselect.createSelector)(domain, function (geo) { return geo.get('hotels'); });
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return !R.isEmpty(search); }); exports.isSetSearch = isSetSearch; var getHotelsByPages = function getHotelsByPages() { return (0, _reselect.createSelector)(searchByKey, R.pipe(R.prop('hotels'), R.values)); }; var getHotelsByMinPrice = function getHotelsByMinPrice() { return (0, _reselect.createSelector)(getHotelsByPages(), (0, _selectors.getOffers)(), _selectors3.getQuery, function (pages, offersMap, query) {
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ramda.clone is the most popular function in ramda (30311 examples)