How to use the assoc function from ramda
Find comprehensive JavaScript ramda.assoc code examples handpicked from public code repositorys.
ramda.assoc is a function that creates a new object with a modified property using a given key-value pair, without mutating the original object.
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if (requesterId === osmId) { const allIds = orgKeys.map(prop('id')) const allValues = pick(allIds, tags) const keysToSend = orgKeys.map((key) => { return assoc('value', allValues[key.id], key) }) return reply.send(keysToSend) } else { requesterIsMemberOfOrg = await org.isMember(orgId, requesterId)
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R.compose( R.dissoc('data'), R.over( R.lens( coerceDataToApiDescriptions, R.assoc('apiDescriptions') ), R.identity ) )
How does ramda.assoc work?
ramda.assoc is a function that takes three arguments: a property key, a value, and an object. It returns a new object with the property specified by the key set to the new value. If the key already exists in the object, its value is replaced; otherwise, a new key-value pair is added. Unlike JavaScript's native Object.assign() method, ramda.assoc does not mutate the original object, but instead returns a new object with the modified property. This makes it a pure function, which is a key concept in functional programming. The syntax for using ramda.assoc is: scss Copy code {{{{{{{ class="!whitespace-pre hljs language-scss">ramda.assoc(key, value, obj) Where: key: A string or symbol representing the key of the property to be modified or added. value: The new value for the property. obj: The object that contains the property to be modified or to which a new property will be added. The function returns a new object with the modified or added property. Example: javascript Copy code {{{{{{{ const R = require('ramda'); const user = {name: 'Alice', age: 30}; const newUser = R.assoc('age', 31, user); console.log(user); // {name: 'Alice', age: 30} console.log(newUser); // {name: 'Alice', age: 31} In this example, we use ramda.assoc to create a new object newUser with the same properties as the original object user, except that the age property is set to a new value of 31. The original user object is not modified, and a new object is returned with the updated property.
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// Update // action -> model -> newModel const update = Action.caseOn({ ChangeNewTitle: R.assoc('newTitle'), Create: (model) => R.evolve({todos: R.append(Todo.init(model.nextId, model.newTitle)), nextId: R.inc, newTitle: R.always('')}, model), Remove: (todo, model) => R.evolve({todos: R.reject(R.eq(todo))}, model),
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R.lensPath(amountBuyPath), reduceBySlippage(slippage) ) )(orders) const appliedData = R.assoc('orders', ordersPostSlippage)(validatedData) return appliedData }
Ai Example
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const R = require("ramda"); const user = { name: "Alice", age: 30 }; const newUser = R.assoc("age", 31, user); console.log(user); // {name: 'Alice', age: 30} console.log(newUser); // {name: 'Alice', age: 31}
In this example, we use ramda.assoc to create a new object newUser with the same properties as the original object user, except that the age property is set to a new value of 31. The original user object is not modified, and a new object is returned with the updated property.
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willSendRequest(_path, request) { const { jwtdata } = this.context.state ?? {} <%_ if(withMultiTenancy){ _%> request.headers = assoc(TenantId, jwtdata?.tid, request.headers) <%_}_%> request.headers = assoc(UserPassport, jwtdata ? JSON.stringify(jwtdata) : undefined, request.headers) request.headers = assoc(UserId, jwtdata?.sub, request.headers) //TODO to be removed if (this.context.token) {
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GitHub: Morozzko/React_Blank_App
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const addStyleLintPluginToPostCSSLoaders = path => config => edit( subConfig => { const { plugins } = subConfig return assoc('plugins', () => [styleLint({ configFile: path }), ...plugins()], subConfig) }, getPaths(isPostCSSOptions, config), config )
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module.exports = (logger) => (config) => { logger.info('Starting migration ...'); const migrationConfigs = [].concat(config.migrations); const getOptions = R.assoc('connection', config); const migrate = (migrationConfig) => { const options = R.clone(getOptions(migrationConfig)); options.connection.user = config.migrationsUser || config.user;
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const readFile = R.partialRight(fs.readFileSync, [{ encoding: 'utf-8' }]); const shortName = name => path.basename(name, SQL_EXT); 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(
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const createTokensFan = async (otApiKey, otSecret, stageSessionId, sessionId) => { const options = { role: OpenTok.otRoles.PUBLISHER, data: buildOtData(roles.FAN) }; const backstageToken = await OpenTok.createToken(otApiKey, otSecret, sessionId, R.assoc('data', buildOtData(roles.BACKSTAGE_FAN), options)); const stageToken = await OpenTok.createToken(otApiKey, otSecret, stageSessionId, options); return { backstageToken, stageToken
GitHub: joneshf/abstractions
![joneshf profile picture](/joneshf.png?size=40)
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function interpretPure(free, store) { return free.resume().either(function(kvs) { return kvs.cata({ Put: function(key, val, next) { return interpretPure(next, R.assoc(key, val, store)); }, Del: function(key, next) { return interpretPure(next, R.dissoc(key, store)); },
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return kvs.cata({ Get: function(str, cont) { return pureObject(cont(store[str]), store); }, Put: function(str, val, cont) { return pureObject(cont, R.assoc(str, val, store)); }, Del: function(str, cont) { return pureObject(cont, R.dissoc(str, store)); },
GitHub: BizzoTech/kunafa-client
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...state, ...newEvents }; case "ADD_EVENT": case "UPDATE_EVENT": return R.assoc(action.doc._id, action.doc, state); case "REMOVE_EVENT": return R.dissoc(action.doc._id, state); case "LOGIN": case "LOGOUT":
GitHub: corporatepiyush/es6
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nationality: 'Spanish', married: true } console.log("object keys =", _.keys(obj)) console.log("object values =", _.values(obj)) console.log("object add attribute =", _.assoc('height', 1.68, obj)) console.log("object remove attribute =", _.dissoc('nationality', obj)) console.log("object check attribute =", _.has('married', obj)) }
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}) const table = getTableForProfileType(profileType) return conn(table) .update({ profile: assoc('tags', tags, currentProfile), updated_at: conn.fn.now() }) .where('id', id) } /**
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// remove properties object. maybe change this if we want to keep styling later R.map(R.assoc("properties", {})), // nest into object R.assoc('features', R.__, { type: 'FeatureCollection' }), // strigify that shit R.toString, )(files)
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R.when(R.prop("scroll"), R.omit(["pageNum"])), R.when(R.prop("temporal"), (params) => // Replace all occurences of `now` in temporal with the current date/time. // Passing `Date.now()` to the `Date` constructor is not necessary, but // doing so allows us to mock a value during unit testing. R.assoc( "temporal", params.temporal.replace(/now/gi, new Date(Date.now()).toISOString()), params, )
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// replaced with a value rounded to 3 significant figures const rungSpecsCapMaxBitrate = parametricLadder => topRungSpec(parametricLadder).bitrate > parametricLadder.limits.finalBitrateMax ? rungSpecsReplace( R.map( r => R.assoc( 'bitrate', r.bitrate * parametricLadder.limits.finalBitrateMax / topRungSpec(parametricLadder).bitrate, r )
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GitHub: asan1010/apk
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} else { const lengthScore = calc.iScore(1, MAX_KEYWORD_LENGTH, lengthStats.length); const indexScore = calc.izScore(4, lengthStats.index); score = calc.aggregate([10, 1], [lengthScore, indexScore]); } return R.assoc('score', score, lengthStats); }), getCollection, getGenre,
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GitHub: asan1010/apk
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ranked, installs: store.getInstallsScore(topApps), length: getKeywordLength(keyword) }; }) .then((stats) => R.assoc('score', getScore(stats), stats))); } module.exports = build;
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GitHub: asan1010/apk
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])) .then((scores) => ({ keywords: scores[0], collections: scores[1] })) .then((stats) => R.assoc('score', getVisbilityScore(stats), stats)); } module.exports = build;
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ramda.clone is the most popular function in ramda (30311 examples)