From 50f4eb10cf5e334b99da700744d4f0a0060a040b Mon Sep 17 00:00:00 2001 From: Mahdi Dibaiee Date: Tue, 28 Jun 2022 15:47:13 +0100 Subject: [PATCH] remove confusing exclamation mark --- _posts/2022-06-16-rust-boxed-str-vs-string.md | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/_posts/2022-06-16-rust-boxed-str-vs-string.md b/_posts/2022-06-16-rust-boxed-str-vs-string.md index 66967a3..a1c1fdd 100644 --- a/_posts/2022-06-16-rust-boxed-str-vs-string.md +++ b/_posts/2022-06-16-rust-boxed-str-vs-string.md @@ -143,7 +143,7 @@ Turns out, `String` and `Vec` cover two of the most common cases where we may wa ```rust fn main() { - let s = String::from("hello!"); + let s = String::from("hello"); println!("{}", s); } ``` @@ -159,19 +159,18 @@ Process 68317 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 frame #0: 0x000000010000476c string-program`string_program::main::h64ca96ee87b0ceaf at main.rs:3:5 1 fn main() { - 2 let s = String::from("hello!"); + 2 let s = String::from("hello"); -> 3 println!("{}", s); 4 } (lldb) frame var -L -T -0x000000016fdfed78: (alloc::string::String) s = "hello!" { -0x000000016fdfed78: (alloc::vec::Vec) vec = size=6 { +0x000000016fdfed78: (alloc::string::String) s = "hello" { +0x000000016fdfed78: (alloc::vec::Vec) vec = size=5 { 0x0000600000004010: (unsigned char) [0] = 'h' 0x0000600000004011: (unsigned char) [1] = 'e' 0x0000600000004012: (unsigned char) [2] = 'l' 0x0000600000004013: (unsigned char) [3] = 'l' 0x0000600000004014: (unsigned char) [4] = 'o' -0x0000600000004015: (unsigned char) [5] = '!' } } ``` @@ -238,7 +237,7 @@ Okay, so a `Box` is much simpler than a `String`: there is no `Vec`, and no let boxed_str: Box = "hello".into(); println!("size of boxed_str on stack: {}", std::mem::size_of_val(&boxed_str)); -let s = String::from("hello!"); +let s = String::from("hello"); println!("size of string on stack: {}", std::mem::size_of_val(&s)); ```