如何创建具有erase(size_t pos)方法的功能向量<wchar_t>？

#include<iostream>
#include<vector>

template<typename T>
class CustomVector {
public:
    CustomVector() = default;

    void push_back(const T& value) {
        data_.push_back(value);
    }

    void erase(size_t pos) {
        if (pos< data_.size()) {
            data_.erase(data_.begin() + pos);
        }
    }

    T& operator[](size_t pos) {
        return data_[pos];
    }

    size_t size() const {
        return data_.size();
    }

private:
    std::vector<T> data_;
};

int main() {
    CustomVector<wchar_t> vec;
    vec.push_back(L'a');
    vec.push_back(L'b');
    vec.push_back(L'c');

    std::cout << "Before erase: ";
    for (size_t i = 0; i < vec.size(); ++i) {
        std::cout<< vec[i] << " ";
    }
    std::cout<< std::endl;

    vec.erase(1);

    std::cout << "After erase: ";
    for (size_t i = 0; i < vec.size(); ++i) {
        std::cout<< vec[i] << " ";
    }
    std::cout<< std::endl;

    return 0;
}