Function json 

pub fn json<F>(f: F) -> impl DisplayJson + Display
where
    F: Fn(&mut JsonFormatter<'_, '_>) -> Result,

Similiar to Json, but can be used for pretty-printing and in-place JSON generation purposes.

Examples

Basic usage

use nojson::json;

// Standard JSON serialization (compact)
let compact = json(|f| f.value([1, 2, 3]));
assert_eq!(compact.to_string(), "[1,2,3]");

Pretty printing with custom indentation

use nojson::json;

// Pretty-printed JSON with 2-space indentation
let pretty = json(|f| {
    f.set_indent_size(2);
    f.set_spacing(true);
    f.value([1, 2, 3])
});

assert_eq!(
    format!("\n{}", pretty),
    r#"
[
  1,
  2,
  3
]"#
);

Mixing formatting styles

use nojson::{json, DisplayJson};

// You can nest formatters with different settings
let mixed = json(|f| {
    f.set_indent_size(2);
    f.set_spacing(true);
    f.value([
        &vec![1] as &dyn DisplayJson,
        &json(|f| {
            f.set_indent_size(0);
            f.value(vec![2, 3])
        }),
    ])
});

assert_eq!(
    format!("\n{}", mixed),
    r#"
[
  [
    1
  ],
  [2, 3]
]"#
);