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takeUntil.js
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takeUntil.js
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const assertArraysEqual = function(arr1, arr2) {
if (eqArrays(arr1, arr2)) {
console.log(`✅✅✅ Assertion Passed: ${arr1} === ${arr2}`);
} else {
console.log(`❌❌❌ Assertion Failed: ${arr1} !== ${arr2}`);
}
};
const eqArrays = function(arr1, arr2) {
if (arr1.length !== arr2.length) {
return false;
}
for (let i = 0; i < arr1.length; i++) {
if (arr1[i] !== arr2[i]) {
return false;
}
}
return true;
};
//New Function
const takeUntil = function(array, callback) {
const newArray = [];
for (let i = 0; i < array.length; i++) {
if (!callback(array[i])) {
newArray.push(array[i]);
} else if (callback(array[i])) {
return newArray;
}
}
};
//Tests
const animals = ["dog", "cat", "fish", "panda", "elephant", "lion", "penguin"];
const housePets = takeUntil(animals, x => x === "panda");
console.log(housePets);
assertArraysEqual(housePets, ["dog", "cat", "fish"]);
const data1 = [1, 2, 5, 7, 2, -1, 2, 4, 5];
const results1 = takeUntil(data1, x => x < 0);
console.log(results1);
assertArraysEqual(results1, [ 1, 2, 5, 7, 2 ]);
const data2 = ["I've", "been", "to", "Hollywood", ",", "I've", "been", "to", "Redwood"];
const results2 = takeUntil(data2, x => x === ',');
console.log(results2);
assertArraysEqual(results2, [ 'I\'ve', 'been', 'to', 'Hollywood' ]);