Fix some examples to use read_to_end

rust-lang · May 24, 2021 · 19708cf · 19708cf
1 parent c378248
commit 19708cf
Show file tree

Hide file tree

Showing 3 changed files with 9 additions and 9 deletions.
diff --git a/examples/deflateencoder-read.rs b/examples/deflateencoder-read.rs
@@ -12,9 +12,9 @@ fn main() {
 
 // Return a vector containing the Defalte compressed version of hello world
 fn deflateencoder_read_hello_world() -> io::Result<Vec<u8>> {
-    let mut ret_vec = [0; 100];
+    let mut result = Vec::new();
     let c = b"hello world";
     let mut deflater = DeflateEncoder::new(&c[..], Compression::fast());
-    let count = deflater.read(&mut ret_vec)?;
-    Ok(ret_vec[0..count].to_vec())
+    deflater.read_to_end(&mut result)?;
+    Ok(result)
 }
diff --git a/examples/gzencoder-read.rs b/examples/gzencoder-read.rs
@@ -12,9 +12,9 @@ fn main() {
 
 // Return a vector containing the GZ compressed version of hello world
 fn gzencoder_read_hello_world() -> io::Result<Vec<u8>> {
-    let mut ret_vec = [0; 100];
+    let mut result = Vec::new();
     let c = b"hello world";
     let mut z = GzEncoder::new(&c[..], Compression::fast());
-    let count = z.read(&mut ret_vec)?;
-    Ok(ret_vec[0..count].to_vec())
+    z.read_to_end(&mut ret_vec)?;
+    Ok(result)
 }
diff --git a/examples/zlibencoder-read.rs b/examples/zlibencoder-read.rs
@@ -15,7 +15,7 @@ fn main() {
 fn open_hello_world() -> std::io::Result<Vec<u8>> {
     let f = File::open("examples/hello_world.txt")?;
     let mut z = ZlibEncoder::new(f, Compression::fast());
-    let mut buffer = [0; 50];
-    let byte_count = z.read(&mut buffer)?;
-    Ok(buffer[0..byte_count].to_vec())
+    let mut result = Vec::new();
+    z.read_to_end(&mut result)?;
+    Ok(result)
 }