# Trait unicode_width::UnicodeWidthStr [−] [src]

    pub trait UnicodeWidthStr {
        fn width<'a>(&'a self) -> usize;
        fn width_cjk<'a>(&'a self) -> usize;
    }

Methods for determining displayed width of Unicode strings.

## Required Methods

### `fn width<'a>(&'a self) -> usize`

Returns the string's displayed width in columns.

Control characters are treated as having zero width.

This function treats characters in the Ambiguous category according to Unicode Standard Annex #11 as 1 column wide. This is consistent with the recommendations for non-CJK contexts, or when the context cannot be reliably determined.

### `fn width_cjk<'a>(&'a self) -> usize`

Returns the string's displayed width in columns.

Control characters are treated as having zero width.

This function treats characters in the Ambiguous category according to Unicode Standard Annex #11 as 2 column wide. This is consistent with the recommendations for CJK contexts.

## Implementors

- `impl UnicodeWidthStr for str`

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