IsEmpty

Trait IsEmpty 

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pub trait IsEmpty {
    // Required method
    fn is_empty_value(&self) -> bool;
}
Expand description

判断“空值”的 trait(用于实现 go-sqlbuilder 的 omitempty 语义子集)。

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impl IsEmpty for &str

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impl IsEmpty for bool

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impl IsEmpty for f64

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impl IsEmpty for i8

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impl IsEmpty for i16

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impl IsEmpty for i32

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impl IsEmpty for i64

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impl IsEmpty for isize

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impl IsEmpty for u8

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impl IsEmpty for u16

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impl IsEmpty for u32

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impl IsEmpty for u64

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impl IsEmpty for usize

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impl IsEmpty for Box<dyn SqlValuer>

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impl IsEmpty for String

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impl<T> IsEmpty for Vec<T>

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impl<T: IsEmpty> IsEmpty for Option<T>

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