Trait SameShape 

pub trait SameShape<Other> { }

Two selections produce the same row: the same column names, in the same order, decoding to the same types. A one-column selection decodes to a bare value rather than a Row, and two of those match when the value types do — there is no name to disagree about. Names as well as types, because a UNION branch or a CTE body whose columns merely happen to be type-compatible would otherwise splice in transposed.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl SameShape<DateTime<Utc>> for DateTime<Utc>

impl SameShape<Decimal> for Decimal

impl SameShape<NaiveDate> for NaiveDate

impl SameShape<Option<DateTime<Utc>>> for Option<DateTime<Utc>>

impl SameShape<Option<Decimal>> for Option<Decimal>

impl SameShape<Option<NaiveDate>> for Option<NaiveDate>

impl SameShape<Option<String>> for Option<String>

impl SameShape<Option<Uuid>> for Option<Uuid>

impl SameShape<Option<Vec<u8>>> for Option<Vec<u8>>

impl SameShape<Option<bool>> for Option<bool>

impl SameShape<Option<f64>> for Option<f64>

impl SameShape<Option<i32>> for Option<i32>

impl SameShape<Option<i64>> for Option<i64>

impl SameShape<String> for String

impl SameShape<Uuid> for Uuid

impl SameShape<Vec<u8>> for Vec<u8>

impl SameShape<bool> for bool

impl SameShape<f64> for f64

impl SameShape<i32> for i32

impl SameShape<i64> for i64

Implementors

impl SameShape<RowNil> for RowNil

impl<A, B> SameShape<Row<B>> for Row<A>

where A: SameShape<B>,

impl<K1, K2, V, Tail1, Tail2> SameShape<RowCons<K2, V, Tail2>> for RowCons<K1, V, Tail1>

where K1: SameNameAs<K2>, Tail1: SameShape<Tail2>,