pub struct IsNullable;
Expand description

Yes, this type can be null

The only diesel provided SqlType that uses this value is Nullable<T>

Trait Implementations

See the trait documentation

See the trait documentation

See the trait documentation

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

See the trait documentation

See the trait documentation

See the trait documentation

See the trait documentation

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

Convert self to an expression for Diesel’s query builder. Read more

Convert &self to an expression for Diesel’s query builder. Read more

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.