Some
Does an array of numbers contain at least an odd one?
Well, we can find that out using some.
We need an array of numbers:
let numbers = [12, 3, 34, 23, 4];
Procedural way
let arrayContainsOdd = false;
for (let i = 0; i < numbers.length; i++) {
const number = numbers[i];
if (number % 2 !== 0) {
arrayContainsOdd = true;
break;
}
}
console.log(arrayContainsOdd); // true
Functional way
Instead of writing the logic from scratch, we have the some function:
arrayContainsOdd = _.some(numbers, number => {
return number % 2 !== 0;
});
console.log(arrayContainsOdd);
Summary
So, some returns true if at least one item in the collection satisfies the condition; otherwise false (meaning if none).