~( Hatter: A x̷̨̼͕͖̼͆͑̈̈́́̈́̓̓͊̐́͋̈̈́̐͗́̂̆̄̑̚͝x̶̢̬͚̥̬̦͇̑̀͗͜͜x̸̛̮͎͉̩̰̥̳͓̥͕̱͓͕̩̻̬̙̹̀̿̋̏́́̐̋̈́̔̓͆͛͊̾͋̍̚͝͠͠x̵̧̥̜̅̋̇͋̈́͑̄̾͒̔̑ HyperText Library )

Hatter is a slightly mad, zero dependency HTML template library.

If you are looking for any of the following:

• Blazing fast speed
• Templates that compile to Rust
• Generating HTML from Rust code
• Type safety

Then you are in the wrong place!

Hatter is an HTML template library that can only do a few things:

• Print values (bool, string, i32)
• Run helper functions
• Loop over a Vec or HashMap
• if/else

That's it. You should definitely be using a different template library.

~( printing values )

rust let mut env = Env::new(); env.set("name", "Bobert, but call me Bob"); let html = env.render("values.html")?;

html <a href="/profile">~( name )</a>

Or the shorthand version, for variables only:

html <a href="/profile">~name</a>

~( helper functions )

rust let mut env = Env::new(); env.set("a", 100); env.set("b", 200); env.helper("add", |_, args| (args[0].as_num() + args[1].as_num()).into()); env.render("helper.html");

```html

According to my calculations, ~a + ~b = ~( add(a, b) )!

```

~( looping )

rust let mut env = Env::new(); let mut pages = vec!["help", "about", "version", "bananas"]; env.set("pages", pages); env.helper("to_title", |_, args| args[0].as_str().capitalize().into()); let html = env.render("loop.html")?;

```html

~( for page in pages )
• ~( to_title(page) )
~( end )

```

~( conditionals )

rust let mut env = Env::new(); let mut pages = vec!["help", "about", "version", "bananas"]; let mut map = HashMap::new(); map.insert("name", "Bobby"); env.set("user", map); env.helper("logged_in", |e,_| current_user == e.get("user").unwrap().as_str()) let html = env.render("cond.html")?;

html ~( if logged_in? ) <a href="/profile">~( user.name )</a> ~( else ) <a href="/login">Log in</a> ~( end )

All together now

```rust let mut env = Env::new(); env.set("pages", vec!["index", "show", "edit"]); env.set("loggedin", true); env.helper("totitle", |, args| capitalize(args[0].asstr()));

let mut user = HashMap::new(); user.insert("name", "htmlkid99"); user.insert("location", "idaho"); env.set("user", user);

let out = env.render("index.html")?; println!("{}", out); ```