Enum cfg_rs::ConfigValue

pub enum ConfigValue<'a> {
    StrRef(&'a str),
    Str(String),
    Int(i64),
    Float(f64),
    Bool(bool),
    Rand(RandValue),
}

Config value, ConfigSource use this value to store config properties.

Placeholder expression

Placeholder expression use normalized string representation of crate::ConfigKey, with extra brackets. For example: ${cfg.k1}.

Placeholder expression is powerful in realworld application, it has following benifits:

Placeholder can reduce duplicated configs, use one key config to affect multiple keys.

• app.name = cfg
• app.version = 1.0.0
• app.desc = Application ${app.name}, version ${app.version}

Placeholder can generate configs, we can use placeholder to generate random values.

• app.id = ${random.u64}
• app.instance = ${app.name}-${app.id}

Variants

StrRef

String reference, supports placeholder expression.

Tuple Fields of StrRef

0: &'a str

Str

String, supports placeholder expression.

Tuple Fields of Str

0: String

Int

Integer.

Tuple Fields of Int

0: i64

Float

Float value.

Tuple Fields of Float

0: f64

Bool

Bool value.

Tuple Fields of Bool

0: bool

Rand

Random value.

Tuple Fields of Rand

0: RandValue

Trait Implementations

impl<'a> Debug for ConfigValue<'a>

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

Formats the value using the given formatter.

impl<'a> Into<ConfigValue<'a>> for String

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for &'a str

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for f64

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for u64

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for u128

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for usize

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for i128

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for isize

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for bool

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for u8

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for u16

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for u32

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for i8

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for i16

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for i32

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for i64

fn into(self) -> ConfigValue<'a>

Performs the conversion.

impl<'a> Into<ConfigValue<'a>> for f32

fn into(self) -> ConfigValue<'a>

Performs the conversion.