---
# System prepended metadata

title: STL Functions

---

# STL Functions
## vector
* `vector<T> v(size_type a, const T& b)`
* `v[i]`
* `v.size()`
* `v.push_back()`
* `v.pop_back()`
* `v.empty()` 回傳一個bool，代表v是否為空
* ``