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< p class = 'location' > Trait CheckedSub< / p > < div class = "block items" > < ul > < li > < a href = "#required-methods" > Required Methods< / a > < / li > < li > < a href = "#implementors" > Implementors< / a > < / li > < / ul > < / div > < p class = 'location' > < a href = 'index.html' > num< / a > < / p > < script > window . sidebarCurrent = { name : 'CheckedSub' , ty : 'trait' , relpath : '' } ; < / script > < script defer src = "sidebar-items.js" > < / script >
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< h1 class = 'fqn' > < span class = 'in-band' > Trait < a href = 'index.html' > num< / a > ::< wbr > < a class = "trait" href = '' > CheckedSub< / a > < / span > < span class = 'out-of-band' > < span id = 'render-detail' >
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< pre class = 'rust trait' > pub trait CheckedSub: < a class = "trait" href = "https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html" title = "trait core::ops::arith::Sub" > Sub< / a > < Self, Output = Self> {
fn < a href = '#tymethod.checked_sub' class = 'fnname' > checked_sub< / a > (& self, v: & Self) -> < a class = "enum" href = "https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < Self> ;
}< / pre > < div class = 'docblock' > < p > Performs subtraction that returns < code > None< / code > instead of wrapping around on underflow.< / p >
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< h2 id = 'required-methods' > Required Methods< / h2 >
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< h3 id = 'tymethod.checked_sub' class = 'method' > < span id = 'checked_sub.v' class = 'invisible' > < code > fn < a href = '#tymethod.checked_sub' class = 'fnname' > checked_sub< / a > (& self, v: & Self) -> < a class = "enum" href = "https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title = "enum core::option::Option" > Option< / a > < Self> < / code > < / span > < / h3 > < div class = 'docblock' > < p > Subtracts two numbers, checking for underflow. If underflow happens,
< code > None< / code > is returned.< / p >
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< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.u16.html" > u16< / a > < / code > < / li >
< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.i8.html" > i8< / a > < / code > < / li >
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< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.u8.html" > u8< / a > < / code > < / li >
< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.i32.html" > i32< / a > < / code > < / li >
< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.usize.html" > usize< / a > < / code > < / li >
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< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.i16.html" > i16< / a > < / code > < / li >
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< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.u32.html" > u32< / a > < / code > < / li >
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< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.isize.html" > isize< / a > < / code > < / li >
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< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.u64.html" > u64< / a > < / code > < / li >
< li > < code > impl CheckedSub for < a class = "primitive" href = "https://doc.rust-lang.org/nightly/std/primitive.i64.html" > i64< / a > < / code > < / li >
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