lo_ 0.3.1

A modern Rust utility library delivering modularity, performance & extras ported from JavaScript Lodash
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

/// Converts string to [camelCase](https://en.wikipedia.org/wiki/Camel_case).
///
/// # Example
/// ```rust
/// use lo_::camel_case;
/// assert_eq!(camel_case("Foo Bar"), "fooBar");
///
/// ```
///
pub fn camel_case(string: &str) -> String {
    let mut result = String::new();
    let mut capitalize_next = false;

    for c in string.chars() {
        if !c.is_alphanumeric() {
            capitalize_next = true;
            continue;
        }

        if capitalize_next {
            if !result.is_empty() {
                result.push(c.to_ascii_uppercase());
            } else {
                result.push(c.to_ascii_lowercase());
            }
            capitalize_next = false;
        } else {
            result.push(c.to_ascii_lowercase());
        }
    }

    result
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_camel_case_spaces() {
        assert_eq!(camel_case("Foo Bar"), "fooBar");
    }

    #[test]
    fn test_camel_case_dashes() {
        assert_eq!(camel_case("--foo-bar--"), "fooBar");
    }

    #[test]
    fn test_camel_case_underscores() {
        assert_eq!(camel_case("__FOO_BAR__"), "fooBar");
    }

    #[test]
    fn test_camel_case_mixed() {
        assert_eq!(camel_case("hello_world-example"), "helloWorldExample");
    }

    #[test]
    fn test_camel_case_empty_string() {
        assert_eq!(camel_case(""), "");
    }

    #[test]
    fn test_camel_case_single_word() {
        assert_eq!(camel_case("word"), "word");
    }
}