From fe5f67575879eb1e4034e79c28084599d909d5eb Mon Sep 17 00:00:00 2001
From: mah0x211 <mah0x211@gmail.com>
Date: Wed, 27 Mar 2024 09:31:54 +0900
Subject: [PATCH] Update README.md

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 373f69e..caa3e8d 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,10 @@ the following functions return the `error` object created by https://github.com/
 
 create a new reader instance that reads data from a file or file descriptor.
 
+**NOTE**
+
+this function uses the `dup` system call internally to duplicate a file descriptor. thus, data can be read from a file even if the passed file is closed.
+
 **Parameters**
 
 - `f:file*|string|integer`: file, filename or file descriptor.