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type_feedback.js
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type_feedback.js
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function addNums(a, b) {
return a + b;
}
for (let i = 0; i < 200; i++) addNums(i, i + 1);
let r1 = addNums(100, 42);
console.log('[fb_num_only ADD]', r1, 'ok:', r1 === 142);
function subNums(a, b) {
return a - b;
}
for (let i = 0; i < 200; i++) subNums(i * 2, i);
let r2 = subNums(100, 58);
console.log('[fb_num_only SUB]', r2, 'ok:', r2 === 42);
function mulNums(a, b) {
return a * b;
}
for (let i = 0; i < 200; i++) mulNums(i, 2);
let r3 = mulNums(21, 2);
console.log('[fb_num_only MUL]', r3, 'ok:', r3 === 42);
function divNums(a, b) {
return a / b;
}
for (let i = 0; i < 200; i++) divNums(i * 3, 3);
let r4 = divNums(84, 2);
console.log('[fb_num_only DIV]', r4, 'ok:', r4 === 42);
function ltNums(a, b) {
return a < b;
}
for (let i = 0; i < 200; i++) ltNums(i, 100);
console.log('[fb_num_only LT] 3<5:', ltNums(3, 5), 'ok:', ltNums(3, 5) === true);
console.log('[fb_num_only LT] 5<3:', ltNums(5, 3), 'ok:', ltNums(5, 3) === false);
function leNums(a, b) {
return a <= b;
}
for (let i = 0; i < 200; i++) leNums(i, 100);
console.log('[fb_num_only LE] 3<=3:', leNums(3, 3), 'ok:', leNums(3, 3) === true);
console.log('[fb_num_only LE] 4<=3:', leNums(4, 3), 'ok:', leNums(4, 3) === false);
function gtNums(a, b) {
return a > b;
}
for (let i = 0; i < 200; i++) gtNums(i, 100);
console.log('[fb_num_only GT] 5>3:', gtNums(5, 3), 'ok:', gtNums(5, 3) === true);
console.log('[fb_num_only GT] 3>3:', gtNums(3, 3), 'ok:', gtNums(3, 3) === false);
function geNums(a, b) {
return a >= b;
}
for (let i = 0; i < 200; i++) geNums(i, 100);
console.log('[fb_num_only GE] 3>=3:', geNums(3, 3), 'ok:', geNums(3, 3) === true);
console.log('[fb_num_only GE] 2>=3:', geNums(2, 3), 'ok:', geNums(2, 3) === false);
function addStrs(a, b) {
return a + b;
}
for (let i = 0; i < 200; i++) addStrs('x', 'y');
let r5 = addStrs('hello', ' world');
console.log('[fb_never_num ADD]', r5, 'ok:', r5 === 'hello world');
function ltStrs(a, b) {
return a < b;
}
for (let i = 0; i < 200; i++) ltStrs('abc', 'def');
console.log("[fb_never_num LT] 'a'<'b':", ltStrs('a', 'b'), 'ok:', ltStrs('a', 'b') === true);
console.log("[fb_never_num LT] 'b'<'a':", ltStrs('b', 'a'), 'ok:', ltStrs('b', 'a') === false);
console.log("[fb_never_num LT] 'z'<'a':", ltStrs('z', 'a'), 'ok:', ltStrs('z', 'a') === false);
function addMixed(a, b) {
return a + b;
}
for (let i = 0; i < 100; i++) addMixed(i, i);
for (let i = 0; i < 100; i++) addMixed('a', 'b');
let r6 = addMixed(20, 22);
let r7 = addMixed('foo', 'bar');
console.log('[mixed ADD] num:', r6, 'ok:', r6 === 42);
console.log('[mixed ADD] str:', r7, 'ok:', r7 === 'foobar');
function addTrainedNum(a, b) {
return a + b;
}
for (let i = 0; i < 200; i++) addTrainedNum(i, i);
let r8 = addTrainedNum('bail', 'out');
console.log('[fb_num_only bailout]', r8, 'ok:', r8 === 'bailout');
let r9 = addTrainedNum(10, 32);
console.log('[post-bailout num]', r9, 'ok:', r9 === 42);
function numericLoop(n) {
let sum = 0;
for (let i = 0; i < n; i++) {
sum = sum + i;
}
return sum;
}
for (let i = 0; i < 200; i++) numericLoop(10);
let r10 = numericLoop(10000);
let expected = (9999 * 10000) / 2;
console.log('[numeric loop]', r10, 'ok:', r10 === expected);
function mathChain(a, b, c) {
let x = a + b;
let y = x * c;
let z = y - a;
return z / b;
}
for (let i = 1; i < 200; i++) mathChain(i, i + 1, 2);
let r11 = mathChain(10, 5, 3);
console.log('[math chain]', r11, 'ok:', r11 === 7);
function countAbove(arr, threshold) {
let count = 0;
for (let i = 0; i < arr.length; i++) {
if (arr[i] > threshold) count = count + 1;
}
return count;
}
let nums = [];
for (let i = 0; i < 100; i++) nums[i] = i;
for (let i = 0; i < 200; i++) countAbove(nums, 50);
let r12 = countAbove(nums, 50);
console.log('[comparison loop]', r12, 'ok:', r12 === 49);
function concatLoop(prefix, n) {
let s = prefix;
for (let i = 0; i < n; i++) {
s = s + '.';
}
return s;
}
for (let i = 0; i < 200; i++) concatLoop('x', 3);
let r13 = concatLoop('start', 5);
console.log('[string concat loop]', r13, 'ok:', r13 === 'start.....');
let allOk =
r1 === 142 &&
r2 === 42 &&
r3 === 42 &&
r4 === 42 &&
ltNums(3, 5) === true &&
ltNums(5, 3) === false &&
leNums(3, 3) === true &&
leNums(4, 3) === false &&
gtNums(5, 3) === true &&
gtNums(3, 3) === false &&
geNums(3, 3) === true &&
geNums(2, 3) === false &&
r5 === 'hello world' &&
ltStrs('a', 'b') === true &&
r6 === 42 &&
r7 === 'foobar' &&
r8 === 'bailout' &&
r9 === 42 &&
r10 === expected &&
r11 === 7 &&
r12 === 49 &&
r13 === 'start.....';
console.log('');
console.log('all type feedback tests passed:', allOk);

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type_feedback.js (4 KB)

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