13 — Files: save and read text

A value lives until the program ends. A file lives on after it. NME's bundled file helper writes text to a file and reads it back with two easy lines.

#Steps

1. Create diary.nme:

   use file latest
   file_write("diary.txt", "Today is a good day")
   show file_read("diary.txt")
   

   copyrun it →

   use file latest loads the helper. file_write puts the text into a new file, and file_read reads it back.

2. Run it:

   nme run diary
   

   copy

   The console prints Today is a good day. Look at the folder: a diary.txt file now sits next to your program.

3. Files are written in the folder you run nme in, so keep the program and its files together. nme r is the shortcut for nme run:

   nme r diary
   

   copy

4. Korean loads the helper with 파일 사용 최신:

   파일 사용 최신
   파일쓰기("일기.txt", "오늘은 좋은 날이에요")
   말해 파일읽기("일기.txt")
   

   copyrun it →

   파일쓰기 writes and 파일읽기 reads, exactly like the English names. Both vocabularies work in one file.

#Try it yourself

Write your favorite food to food.txt, then read it back:

use file latest
file_write("food.txt", "Kimchi stew")
show file_read("food.txt")

#What you learned

• use file latest / 파일 사용 최신 loads the bundled file helper.
• file_write(path, text) / 파일쓰기(경로, 내용) saves text to a file.
• file_read(path) / 파일읽기(경로) reads it back.
• The file appears in the folder you run nme in, next to the program.