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===== Package & import =====

==== What is it? ====
  * `package` is how Go organizes code into reusable units.
  * `import` lets you use code from other packages.

==== What is it used for? ====
  * Organize code by folders/modules.
  * Reuse logic across your project.

==== Example ====
<code go>
package main

import "fmt"

func main() {
    fmt.Println("Hello")
}
</code>

==== Important notes ====
  * `package main` + `func main()` is the program entry point.
  * Names starting with an uppercase letter (e.g. `Println`) are exported (public).

==== Hard words (English) ====
  * **organize** /ˈɔːrɡənaɪz/: tổ chức
  * **reuse** /ˌriːˈjuːz/: tái sử dụng
  * **entry point** /ˈentri pɔɪnt/: điểm bắt đầu chạy
  * **exported** /ɪkˈspɔːrtɪd/: public (truy cập từ package khác)