LposOptions in redis - Rust
Description: Options for the LPOS command

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## LposOptions

# Struct LposOptions

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    pub struct LposOptions { /* private fields */ }

Expand description

Options for the LPOS command

## §Example

    use redis::{Commands, RedisResult, LposOptions};
    fn fetch_list_position(
        con: &mut redis::Connection,
        key: &str,
        value: &str,
        count: usize,
        rank: isize,
        maxlen: usize,
    ) -> RedisResult<Vec<usize>> {
        let opts = LposOptions::default()
            .count(count)
            .rank(rank)
            .maxlen(maxlen);
        con.lpos(key, value, opts)
    }

## Implementations§

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### impl LposOptions

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#### pub fn count(self, n: usize) -> Self

Limit the results to the first N matching items.

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#### pub fn rank(self, n: isize) -> Self

Return the value of N from the matching items.

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#### pub fn maxlen(self, n: usize) -> Self

Limit the search to N items in the list.

## Trait Implementations§

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### impl Default for LposOptions

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#### fn default() -> LposOptions

Returns the “default value” for a type. Read more
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### impl ToRedisArgs for LposOptions

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#### fn write_redis_args<W>(&self, out: &mut W)
where W: ?Sized + RedisWrite,

This writes the value into a vector of bytes. Each item is a single argument. Most items generate a single item. Read more
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#### fn num_of_args(&self) -> usize

Returns the number of arguments this value will generate. Read more
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#### fn to_redis_args(&self) -> Vec<Vec<u8>>

This converts the value into a vector of bytes. Each item is a single argument. Most items generate a vector of a single item. Read more
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#### fn describe_numeric_behavior(&self) -> NumericBehavior

Returns an information about the contained value with regards to it’s numeric behavior in a redis context. This is used in some high level concepts to switch between different implementations of redis functions (for instance `INCR` vs `INCRBYFLOAT`).

## Auto Trait Implementations§

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### impl Freeze for LposOptions

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### impl RefUnwindSafe for LposOptions

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### impl Send for LposOptions

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### impl Sync for LposOptions

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### impl Unpin for LposOptions

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### impl UnwindSafe for LposOptions

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [`Span`], returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> PolicyExt for T
where T: ?Sized,

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#### fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new `Policy` that returns [`Action::Follow`] only if `self` and `other` return `Action::Follow`. Read more
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#### fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new `Policy` that returns [`Action::Follow`] if either `self` or `other` returns `Action::Follow`. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a [`WithDispatch`] wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a [`WithDispatch`] wrapper. Read more
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### impl<T> ErasedDestructor for T
where T: 'static,

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### impl<T> MaybeSendSync for T