# Code Corpus (Sample)
# Python
def factorial(n):
    if n == 0: return 1
    return n * factorial(n-1)

class NeuralNet(nn.Module):
    def __init__(self):
        super().__init__()
        self.fc1 = nn.Linear(784, 128)
    def forward(self, x):
        return F.relu(self.fc1(x))

import numpy as np
import pandas as pd
import requests
import json
import os
import sys

# Common keywords
python java rust c++ javascript typescript go ruby php swift
for while if else elif break continue return yield await async
class def function var let const struct impl pub fn mut
true false none null undefined nan infinity
try except catch finally raise throw
import from as package crate module

# Rust
fn main() {
    println!("Hello, world!");
    let mut x = 5;
    let y = &x;
}
pub struct Tokenizer {
    vocab: Vec<String>,
}
impl Tokenizer {
    pub fn new() -> Self { Self { vocab: vec![] } }
}

# C++
#include <iostream>
#include <vector>
using namespace std;
int main() {
    vector<int> v = {1, 2, 3};
    for (auto i : v) cout << i << endl;
    return 0;
}
// JavaScript
const fetchData = async () => {
    const res = await fetch('/api/data');
    const json = await res.json();
    console.log(json);
};
function add(a, b) { return a + b; }