how to get each helper length?

[wzhsh90]

{{#each list}}

{{/each}}

how to get list's length ?

the follow code is wrong
{{#if (gte list.len() 0)}}

{{/if}}

[123shang60]

The length in handlerbars-rust syntax is not supported

example:

use handlebars::Handlebars;
#[macro_use]
extern crate serde_json;

fn main() {
    let mut h = Handlebars::new();
    h.register_template_string("1",r#"
    {{foo.length}}
    "#).unwrap();
    let res = h.render("1", &json!({"foo": ["1","2"]})).unwrap();
    println!("{}",res);
}

Compile and run the application, and you can get the response：

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: RenderError { desc: "Error on accessing array/vector with string index.: invalid digit found in string", template_name: Some("1"), line_no: Some(2), column_no: Some(5), cause: Some(ParseIntError { kind: InvalidDigit }) }', src/main.rs:10:57

[sunng87]

Yes. You will need a helper for this. I will create a built-in helper to fill the gap.