/
takeUntil.js
54 lines (46 loc) · 1.52 KB
/
takeUntil.js
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const eqArrays = function(array1, array2) {
if (array1.length !== array2.length) {
// console.log("Arrays not equal length")
return false;
}
for (let i = 0; i < array1.length; i++) {
if (array1[i] !== array2[i]) {
return false;
}
} return true;
};
const assertArraysEqual = function(actual, expected) {
if (eqArrays(actual, expected) === true) {
console.log(`✅✅✅ Assertion Passed: "${actual}" === "${expected}"`);
} else {
console.log(`🛑🛑🛑 Assertion Failed: "${actual}" !== "${expected}"`);
}
};
const takeUntil = function(array, callback) {
let results = [];
for (let i = 0; i < array.length; i++) {
if (callback(array[i])) {
// console.log('true');
results = array.slice(0, i);
return results;
// console.log(array)
}
// console.log(i, 'false')
// console.log(array[i])
}
return results;
};
const data1 = [1, 2, 5, 7, 2, -1, 2, 4, 5];
const results1 = takeUntil(data1, x => x < 0);
console.log(results1);
console.log('---');
const data2 = ["I've", "been", "to", "Hollywood", ",", "I've", "been", "to", "Redwood"];
const results2 = takeUntil(data2, x => x === ',');
console.log(results2);
console.log('---');
const data3 = ["I've", "been", "to", "Hollywood", ",", "I've", "been", ",", "to", "Redwood"];
const results3 = takeUntil(data3, x => x === ',');
console.log(results2);
assertArraysEqual(results1, data1.slice(0, 5));
assertArraysEqual(results2, data2.slice(0, 4));
assertArraysEqual(results3, ["I've", "been", "to", "Hollywood"]);