0062【Edabit ★☆☆☆☆☆】Arrow Functions

0062【Edabit ★☆☆☆☆☆】Arrow Functions

closures higher_order_functions language_fundamentals logic

Instructions

Tips

Bonus

Notes

• N/A

Solutions

function add2(x) {
	return x + 2;
}

function add3(x) {
	return x + 3;
}

function add5(x) {
	return x + 5;
}

function add7(x) {
	return x + 7;
}

function add11(x) {
	return x + 1;
}
// 
add2 = (x) => x + 2;
add3 = (x) => x + 3;
add5 = (x) => x + 5;
add7 = (x) => x + 7;
add11 = (x) => x + 11;

TestCases

let Test = (function(){
    return {
        assertEquals:function(actual,expected){
            if(actual !== expected){
                let errorMsg = `actual is ${actual},${expected} is expected`;
                throw new Error(errorMsg);
            }
        },
        assertSimilar:function(actual,expected){
            if(actual.length != expected.length){
                throw new Error(`length is not equals, ${actual},${expected}`);
            }
            for(let a of actual){
                if(!expected.includes(a)){
                    throw new Error(`missing ${a}`);
                }
            }
        }
    }
})();



Test.assertEquals(add2(1), 3)
Test.assertEquals(add2(9), 11)
Test.assertEquals(add2(435), 437)

Test.assertEquals(add3(1), 4)
Test.assertEquals(add3(9), 12)
Test.assertEquals(add3(435), 438)

Test.assertEquals(add5(1), 6)
Test.assertEquals(add5(9), 14)
Test.assertEquals(add5(435), 440)

Test.assertEquals(add7(1), 8)
Test.assertEquals(add7(9), 16)
Test.assertEquals(add7(435), 442)

Test.assertEquals(add11(1), 12)
Test.assertEquals(add11(9), 20)
Test.assertEquals(add11(435), 446)