isNot.md

isNot (source code)

• Alias: notEquals
• Curried: false
• Failsafe status: failsafe by default

The isNot function returns true if the given values (or references) are not equal and false otherwise. It provides the opposite behavior of the Object.is() method.

Arguments:

• The two values to be checked for equality.

Usage:

The primary difference between isNot() and !== is that isNot() is a curried function, which means you can partially apply it to create a new function that's pre-configured to compare one value against another value repeatedly.

const value1 = 10;
const isNotValue1 = isNot(value1);
const value2 = 20;
isNotValue1(value2); // true

// Filter out fruits that are not Apple
const fruits = ["Apple", "Orange", "Lemon"];
fruits.filter(notEquals("Apple")); // ["Orange", "Lemon"];