feat: add smartstring

live-reload-rust/smartstring/Cargo.lock

@@ -0,0 +1,23 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "smartstring"
+version = "0.1.0"
+dependencies = [
+ "smartstring 0.2.5",
+]
+
+[[package]]
+name = "smartstring"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5579edba9651e6b9ccf0d516c4457521a149dadeb77e88b03eb1ae3183fe180a"
+dependencies = [
+ "static_assertions",
+]
+
+[[package]]
+name = "static_assertions"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"

live-reload-rust/smartstring/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "smartstring"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+smartstring = "*"

live-reload-rust/smartstring/README.md

@@ -0,0 +1,8 @@
+
+reference:
+https://fasterthanli.me/articles/peeking-inside-a-rust-enum
+
+PDF:
+https://playsecurity.org/getdoc/3960_FF94A1BACA2F799268DB484102E074D0/Peeking%20inside%20a%20Rust%20enum.pdf
+
+

live-reload-rust/smartstring/src/main.rs

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+use smartstring::{Compact, SmartString};
+use std::mem::size_of_val;
+
+fn main() {
+    let smart = SmartString::<Compact>::from("hello world");
+    dbg!(size_of_val(&smart));
+
+    let stand = String::from("hello world");
+    dbg!(size_of_val(&stand));
+    dbg!(size_of_val(&stand) + stand.capacity());
+}