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How to use the lensProp function from ramda

Find comprehensive JavaScript ramda.lensProp code examples handpicked from public code repositorys.

ramda.lensProp creates a lens for a given property name.

bench.js

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const l_0 = R.lensIndex(0)
const l_1 = R.lensIndex(1)
const l_50 = R.lensIndex(50)
const l_x = R.lensProp('x')
const l_y = R.lensProp('y')
const l_z = R.lensProp('z')
const l_0_x_0_y = R.compose(
  l_0,
  l_x,
  l_0,

901

+ 11 other calls in file

index.html

GitHub: 0xjjpa/github-patterns

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var getMonth = function getMonth(project) {
  return moment(project.starred_at).format('MMMM');
};

var languageLens = function languageLens(project) {
  return R.lensProp(project.repo.language);
};
var dateLens = function dateLens(project) {
  return R.lensProp(getMonth(project));
};

+ 3 other calls in file

How does ramda.lensProp work?

ramda.lensProp is a function in the Ramda library that creates a lens that focuses on a specific property of an object.

The returned lens can be used to read, write or transform the property value in a safe and functional way, without directly mutating the object.

The lensProp function takes a string representing the property name and returns a lens object that can be used in Ramda's view, set, over, and other lens-related functions.

plugins.js

GitHub: Morozzko/React_Blank_App

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+ 3 other calls in file

order-of-tests.js

GitHub: bahmutov/focha

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const logShuffle = (s) =>
  log('shuffling %d describe blocks in "%s"',
    s.suites.length, s.title)


const suitesLens = R.lensProp('suites')
const shuffleSuites = R.over(suitesLens, _.shuffle)
const shuffleNestedSuites = R.over(suitesLens, R.map(shuffleDescribes))


function shuffleTests (suite) {

Ai Example

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const person = { name: "John", age: 32 };
const ageLens = R.lensProp("age");
const newPerson = R.set(ageLens, 33, person); // { name: 'John', age: 33 }
const age = R.view(ageLens, person); // 32

In this example, ramda.lensProp is used to create a lens for the age property of an object. This lens can be used to get, set or modify the value of the property. In this case, it is used to update the age of a person object and to get the age of the original person object.

parametricLadder.js

GitHub: eluv-io/elv-abr-profile

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    widthMin: 100,
  }
}


// Shorthand accessor for modifying rungSpecs
const RUNG_SPECS_LENS = R.lensProp('rungSpecs')


// --------------------------------------
// internal functions
// --------------------------------------

+ 252 other calls in file

cyclejs-audio-driver.js

GitHub: jemmyw/cyclejs-audio-driver

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* @param {*} x
* @return {*}
* @see R.prop, R.lensIndex, R.lensProp
* @example
*
*      var xLens = R.lensProp('x');
*
*      R.set(xLens, 4, {x: 1, y: 2});  //=> {x: 4, y: 2}
*      R.set(xLens, 8, {x: 1, y: 2});  //=> {x: 8, y: 2}
*/

+ 53 other calls in file

getAllCloudUsersSpec.js

GitHub: AlienCreations/auth-platform

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const privateFields = R.concat(COMMON_PRIVATE_FIELDS, USER_PRIVATE_FIELDS);


let KNOWN_TEST_CLOUD_USER_DATA;


const birthdayLens = R.lensProp('birthday');


describe('cloudUserCtrl.getAllCloudUsers', () => {
  beforeAll(done => {
    converter.fromFile(path.resolve(__dirname, '../../../../run/env/test/seedData/coreDb/cloudUsers.csv'), (err, data) => {

+ 2 other calls in file

bundle.js

GitHub: Gaoey/canvas-vertice-google-detected-text

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* @param {String} k
* @return {Lens}
* @see R.view, R.set, R.over
* @example
*
*      const xLens = R.lensProp('x');
*
*      R.view(xLens, {x: 1, y: 2});            //=> 1
*      R.set(xLens, 4, {x: 1, y: 2});          //=> {x: 4, y: 2}
*      R.over(xLens, R.negate, {x: 1, y: 2});  //=> {x: -1, y: 2}

+ 11 other calls in file

t2.js

GitHub: octachrome/t2

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State.getId = R.path(['state', 'id']);


State.eq = R.pathEq(['state', 'id']);


State.lens = R.lensProp('state');


Object.freeze(State);


///// Player

+ 3 other calls in file

rungSpec.js

GitHub: eluv-io/elv-abr-profile

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// --------------------------------------
// constants
// --------------------------------------


// Accessor for dim
const DIM_LENS = R.lensProp('dim')


// --------------------------------------
// internal functions
// --------------------------------------

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