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takeUntil.js
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takeUntil.js
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const eqArrays = function(arrayOne, arrayTwo) {
if (arrayOne.length !== arrayTwo.length) {
return false;
}
const isEqual = (currentElement, currentIndex) => currentElement === arrayTwo[currentIndex];
return arrayOne.every(isEqual);
};
const assertArraysEqual = function(arrayOne, arrayTwo) {
if (eqArrays(arrayOne, arrayTwo)) {
console.log(`✅Assertion Passed: Arrays are equal✅`);
} else {
console.log(`🛑Assertion Failed: Arrays are not equal🛑`);
}
};
const takeUntil = function(arr, callback) {
let result = [];
for (let i in arr) {
if (!callback(arr[i])) {
result.push(arr[i]);
} else {
break;
}
}
return result;
};
//TEST CODE
const data1 = [1, 2, 5, 7, 2, -1, 2, 4, 5];
const results1 = takeUntil(data1, x => x < 0);
console.log(results1);
const data2 = ["I've", "been", "to", "Hollywood", ",", "I've", "been", "to", "Redwood"];
const results2 = takeUntil(data2, x => x === ',');
console.log(results2);
assertArraysEqual(takeUntil([1,2,3,4,5], x => x <= 3), []);
assertArraysEqual(takeUntil([1,2,3,4,5], x => x >= 3), [1,2]);