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takeUntil.js
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takeUntil.js
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// Testing helper functions
const eqArrays = function (array1, array2){
if (array1.length !== array2.length) {
return false;
}
for (let i = 0; i < array2.length; i++) {
if (array1[i] !== array2[i]){
return false;
}
}
return true;
};
const assertArraysEqual = function (actual, expected){
if (eqArrays(actual, expected)) {
console.log(` ✅ Assertion Passed: ${actual} === ${expected}`);
} else {
console.log(` 🔴 Assertion Failed: ${actual} !== ${expected}`);
}
};
// -------------------------------------------------------------------------------
const takeUntil = function(array, callback){
const output = [];
//let check= false;
for (let element of array){
let matches = callback(element)
if (!matches) {
output.push(element);
} else {
//check = true;
return output
}
}
return output
}
//----------------------------------------------------------------------------------------
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);
// Expected output
// [ 1, 2, 5, 7, 2 ]
// ---
// [ 'I\'ve', 'been', 'to', 'Hollywood' ]
assertArraysEqual(results1,[ 1, 2, 5, 7, 2 ] )
assertArraysEqual(results2, [ 'I\'ve', 'been', 'to', 'Hollywood' ])