Struct Column 

pub struct Column {
    pub name: String,
    pub value: ColumnValue,
    pub op: Option<ColumnOp>,
    pub timestamp: Option<u64>,
}

Fields

name: String

value: ColumnValue

op: Option<ColumnOp>

timestamp: Option<u64>

Implementations

impl Column

pub fn from_integer(name: &str, value: i64) -> Self

构造整数列

pub fn from_double(name: &str, value: f64) -> Self

构造双精度列

pub fn from_bool(name: &str, value: bool) -> Self

构造布尔值列

pub fn from_string(name: &str, value: impl Into<String>) -> Self

构造字符串列

pub fn from_blob(name: &str, value: impl Into<Vec<u8>>) -> Self

构造二进制列

pub fn null(name: &str) -> Self

构造空值列

pub fn inf_min(name: &str) -> Self

构造极小值列

pub fn inf_max(name: &str) -> Self

构造极大值列

Trait Implementations

impl Clone for Column

fn clone(&self) -> Column

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Column

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Column

fn default() -> Column

Returns the “default value” for a type.

impl PartialEq for Column

fn eq(&self, other: &Column) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Column