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<!DOCTYPE html> < html lang = "en" > < head > < meta charset = "utf-8" > < meta name = "viewport" content = "width=device-width, initial-scale=1.0" > < meta name = "generator" content = "rustdoc" > < meta name = "description" content = "Methods for determining displayed width of Unicode characters." > < title > UnicodeWidthChar in unicode_width - Rust< / title > < script > if ( window . location . protocol !== "file:" ) document . head . insertAdjacentHTML ( "beforeend" , "SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2" . split ( "," ) . map ( f => ` <link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/ ${ f } "> ` ) . join ( "" ) ) < / script > < link rel = "stylesheet" href = "../static.files/normalize-76eba96aa4d2e634.css" > < link rel = "stylesheet" href = "../static.files/rustdoc-dd39b87e5fcfba68.css" > < meta name = "rustdoc-vars" data-root-path = "../" data-static-root-path = "../static.files/" data-current-crate = "unicode_width" data-themes = "" data-resource-suffix = "" data-rustdoc-version = "1.80.0 (051478957 2024-07-21)" data-channel = "1.80.0" data-search-js = "search-d52510db62a78183.js" data-settings-js = "settings-4313503d2e1961c2.js" > < script src = "../static.files/storage-118b08c4c78b968e.js" > < / script > < script defer src = "sidebar-items.js" > < / script > < script defer src = "../static.files/main-20a3ad099b048cf2.js" > < / script > < noscript > < link rel = "stylesheet" href = "../static.files/noscript-df360f571f6edeae.css" > < / noscript > < link rel = "icon" href = "https://unicode-rs.github.io/unicode-rs_sm.png" > < / head > < body class = "rustdoc trait" > <!-- [if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif] --> < nav class = "mobile-topbar" > < button class = "sidebar-menu-toggle" title = "show sidebar" > < / button > < a class = "logo-container" href = "../unicode_width/index.html" > < img src = "https://unicode-rs.github.io/unicode-rs_sm.png" alt = "" > < / a > < / nav > < nav class = "sidebar" > < div class = "sidebar-crate" > < a class = "logo-container" href = "../unicode_width/index.html" > < img src = "https://unicode-rs.github.io/unicode-rs_sm.png" alt = "logo" > < / a > < h2 > < a href = "../unicode_width/index.html" > unicode_width< / a > < span class = "version" > 0.1.13< / span > < / h2 > < / div > < h2 class = "location" > < a href = "#" > UnicodeWidthChar< / a > < / h2 > < div class = "sidebar-elems" > < section > < h3 > < a href = "#required-methods" > Required Methods< / a > < / h3 > < ul class = "block" > < li > < a href = "#tymethod.width" > width< / a > < / li > < li > < a href = "#tymethod.width_cjk" > width_cjk< / a > < / li > < / ul > < h3 > < a href = "#foreign-impls" > Implementations on Foreign Types< / a > < / h3 > < ul class = "block" > < li > < a href = "#impl-UnicodeWidthChar-for-char" > char< / a > < / li > < / ul > < h3 > < a href = "#implementors" > Implementors< / a > < / h3 > < / section > < h2 > < a href = "index.html" > In crate unicode_width< / a > < / h2 > < / div > < / nav > < div class = "sidebar-resizer" > < / div > < main > < div class = "width-limiter" > < rustdoc-search > < / rustdoc-search > < section id = "main-content" class = "content" > < div class = "main-heading" > < h1 > Trait < a href = "index.html" > unicode_width< / a > ::< wbr > < a class = "trait" href = "#" > UnicodeWidthChar< / a > < button id = "copy-path" title = "Copy item path to clipboard" > Copy item path< / button > < / h1 > < span class = "out-of-band" > < a class = "src" href = "../src/unicode_width/lib.rs.html#118-136" > source< / a > · < button id = "toggle-all-docs" title = "collapse all docs" > [< span > − < / span > ]< / button > < / span > < / div > < pre class = "rust item-decl" > < code > pub trait UnicodeWidthChar {
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// Required methods
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fn < a href = "#tymethod.width" class = "fn" > width< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.80.0/core/primitive.usize.html" > usize< / a > > ;
< span class = "item-spacer" > < / span > fn < a href = "#tymethod.width_cjk" class = "fn" > width_cjk< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.80.0/core/primitive.usize.html" > usize< / a > > ;
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}< / code > < / pre > < details class = "toggle top-doc" open > < summary class = "hideme" > < span > Expand description< / span > < / summary > < div class = "docblock" > < p > Methods for determining displayed width of Unicode characters.< / p >
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< / div > < / details > < h2 id = "required-methods" class = "section-header" > Required Methods< a href = "#required-methods" class = "anchor" > §< / a > < / h2 > < div class = "methods" > < details class = "toggle method-toggle" open > < summary > < section id = "tymethod.width" class = "method" > < a class = "src rightside" href = "../src/unicode_width/lib.rs.html#126" > source< / a > < h4 class = "code-header" > fn < a href = "#tymethod.width" class = "fn" > width< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.80.0/core/primitive.usize.html" > usize< / a > > < / h4 > < / section > < / summary > < div class = "docblock" > < p > Returns the character’ s displayed width in columns, or < code > None< / code > if the
character is a control character.< / p >
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< p > This function treats characters in the Ambiguous category according
to < a href = "http://www.unicode.org/reports/tr11/" > Unicode Standard Annex #11< / a >
as 1 column wide. This is consistent with the recommendations for non-CJK
contexts, or when the context cannot be reliably determined.< / p >
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< / div > < / details > < details class = "toggle method-toggle" open > < summary > < section id = "tymethod.width_cjk" class = "method" > < a class = "src rightside" href = "../src/unicode_width/lib.rs.html#135" > source< / a > < h4 class = "code-header" > fn < a href = "#tymethod.width_cjk" class = "fn" > width_cjk< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.80.0/core/primitive.usize.html" > usize< / a > > < / h4 > < / section > < / summary > < div class = "docblock" > < p > Returns the character’ s displayed width in columns, or < code > None< / code > if the
character is a control character.< / p >
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< p > This function treats characters in the Ambiguous category according
to < a href = "http://www.unicode.org/reports/tr11/" > Unicode Standard Annex #11< / a >
as 2 columns wide. This is consistent with the recommendations for
CJK contexts.< / p >
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< / div > < / details > < / div > < h2 id = "foreign-impls" class = "section-header" > Implementations on Foreign Types< a href = "#foreign-impls" class = "anchor" > §< / a > < / h2 > < details class = "toggle implementors-toggle" > < summary > < section id = "impl-UnicodeWidthChar-for-char" class = "impl" > < a class = "src rightside" href = "../src/unicode_width/lib.rs.html#138-148" > source< / a > < a href = "#impl-UnicodeWidthChar-for-char" class = "anchor" > §< / a > < h3 class = "code-header" > impl < a class = "trait" href = "trait.UnicodeWidthChar.html" title = "trait unicode_width::UnicodeWidthChar" > UnicodeWidthChar< / a > for < a class = "primitive" href = "https://doc.rust-lang.org/1.80.0/core/primitive.char.html" > char< / a > < / h3 > < / section > < / summary > < div class = "impl-items" > < section id = "method.width" class = "method trait-impl" > < a class = "src rightside" href = "../src/unicode_width/lib.rs.html#140-142" > source< / a > < a href = "#method.width" class = "anchor" > §< / a > < h4 class = "code-header" > fn < a href = "#tymethod.width" class = "fn" > width< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.80.0/core/primitive.usize.html" > usize< / a > > < / h4 > < / section > < section id = "method.width_cjk" class = "method trait-impl" > < a class = "src rightside" href = "../src/unicode_width/lib.rs.html#145-147" > source< / a > < a href = "#method.width_cjk" class = "anchor" > §< / a > < h4 class = "code-header" > fn < a href = "#tymethod.width_cjk" class = "fn" > width_cjk< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.80.0/core/primitive.usize.html" > usize< / a > > < / h4 > < / section > < / div > < / details > < h2 id = "implementors" class = "section-header" > Implementors< a href = "#implementors" class = "anchor" > §< / a > < / h2 > < div id = "implementors-list" > < / div > < script src = "../trait.impl/unicode_width/trait.UnicodeWidthChar.js" data-ignore-extern-crates = "core" async > < / script > < / section > < / div > < / main > < / body > < / html >