Struct repr::gen::row::ProtoDatum[][src]

pub struct ProtoDatum {
    pub datum_type: Option<DatumType>,
}

Fields

datum_type: Option<DatumType>

NB: Proto oneof ids 1..=15 get encoded in 1 byte and so we should reserve them for the datum types we expect to be most popular.

Null, False, and True are all likely to be frequent, but the encoded length is exactly the same if they’re here or in ProtoDatumOther. In general, anything that can be encoded purely as a proto enum variant (i.e. doesn’t have a payload) is better off that way. If we run out of 1-byte encodings of ProtoDatumOther, we can always add ProtoDatumOther2.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

Performs the conversion.

Returns the encoded length of the message without a length delimiter.

Clears the message, resetting all fields to their default.

Encodes the message to a buffer. Read more

Encodes the message to a newly allocated buffer.

Encodes the message with a length-delimiter to a buffer. Read more

Encodes the message with a length-delimiter to a newly allocated buffer.

Decodes an instance of the message from a buffer. Read more

Decodes a length-delimited instance of the message from the buffer.

Decodes an instance of the message from a buffer, and merges it into self. Read more

Decodes a length-delimited instance of the message from buffer, and merges it into self. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

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

Performs the conversion.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Performs the conversion.

The resulting type after obtaining ownership.

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

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more