Add rust chrono note, adjust other rust notes

Author: Yutsuten

notes/language/rust/crates/chrono.md

@@ -0,0 +1,25 @@
+---
+title: Chrono
+ref: https://docs.rs/chrono/latest/chrono/index.html
+---
+
+## Install
+
+Perform operations on dates and times.
+
+```shell
+cargo add chrono
+```
+
+## Usage
+
+Print current datetime in an arbitrary format:
+
+```rust
+use chrono::prelude::*;
+
+fn main() {
+    let now: DateTime<Local> = Local::now();
+    println!("{}", now.format("%Y-%m-%d %H:%M:%S"));
+}
+```

notes/language/rust/crates/clap.md

@@ -3,14 +3,16 @@ title: Clap
 ref: https://docs.rs/clap/latest/clap/_derive/_tutorial/chapter_0/index.html
 ---
 
-## Usage
+## Install
 
-Command Line Argument Parser for Rust.
+Command line argument parser.
 
 ```shell
 cargo add -F derive clap
 ```
 
+## Usage
+
 Example of program with 3 available arguments:
 
 - `-r/--random` boolean

notes/language/rust/crates/iced.md

@@ -3,22 +3,17 @@ title: Iced
 ref: https://book.iced.rs/first-steps.html
 ---
 
-## Basic
+## Install
 
-A very simple example of a working GUI application
-(using the unreleased v0.13.0 as for 2024/08/17):
+Create GUI applications.
 
-`Cargo.toml`
+```shell
+cargo add iced
+```
 
-```toml
-[package]
-name = "sample"
-version = "0.1.0"
-edition = "2021"
+## Usage
 
-[dependencies]
-iced = { git = "https://github.com/iced-rs/iced.git" } # "0.13.0"
-```
+A very simple example using v0.13.0:
 
 `src/main.rs`
 

notes/language/rust/crates/rand.md

@@ -3,14 +3,16 @@ title: Rand
 ref: https://rust-lang-nursery.github.io/rust-cookbook/algorithms/randomness.html
 ---
 
-## Usage
+## Install
 
-Utilities to generate random numbers in Rust.
+Generate random numbers.
 
 ```shell
 cargo add rand
 ```
 
+## Usage
+
 Generate a random number within a range:
 
 ```rust

notes/language/rust/crates/reqwest.md

@@ -3,15 +3,17 @@ title: Reqwest
 ref: https://docs.rs/reqwest/latest/reqwest/index.html
 ---
 
-## Blocking
+## Install
 
-The simplest way to make a request is by making a blocking request.
+Make HTTP requests.
 
 ```shell
-cargo add -F blocking reqwest
+cargo add -F blocking reqwest  # For blocking requests
 ```
 
-Simple example using `v0.12.7`:
+## Blocking
+
+Simple example using v0.12.7:
 
 ```rust
 fn main() -> Result<(), Box<dyn std::error::Error>> {

notes/language/rust/crates/serde_json.md

@@ -3,12 +3,16 @@ title: Serde JSON
 ref: https://docs.rs/serde_json/latest/serde_json/enum.Value.html
 ---
 
-## Untyped JSON
+## Install
+
+Manipulate JSON.
 
 ```shell
 cargo add serde_json
 ```
 
+## Untyped JSON
+
 Instantiate a JSON:
 
 ```rust