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takeUntil.js
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takeUntil.js
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// t will take in two parameters as well:
// The array to work with
// The callback (which Lodash calls "predicate")
const takeUntil = function(array, callback) {
let results=[];
for (let value of array) {
if (callback(value)) {
return results;
}
results.push(value);
}
return results;
}
const eqArrays = function (firstArray, secondArray) {
let count =0;
for (let i = 0; i <=firstArray.length-1; i ++) {
if (firstArray[i] === secondArray[i]) {
count +=1;
}
}
if (count === firstArray.length) {
return true;
} else {
return false;
}
}
const assertArraysEqual = function(actual, expected) {
let new1 = eqArrays(actual,expected);
if (new1 === true) {
console.log(` ✅✅✅ Assertion Passed: ${actual} === ${expected}`);
} else {
console.log(` 🚫🚫🚫 Assertion Failed: ${actual} !== ${expected}`);
}
};
const data1 = [1, 2, 5, 7, 2, -1, 2, 4, 5];
const results1 = takeUntil(data1, x => x < 0);
const data2 = ["I've", "been", "to", "Hollywood", ",", "I've", "been", "to", "Redwood"];
const results2 = takeUntil(data2, x => x === ',');
assertArraysEqual(results1,[ 1, 2, 5, 7, 2 ]);
assertArraysEqual(results2,[ 'I\'ve', 'been', 'to', 'Hollywood' ]);
module.exports = takeUntil;