Type Alias ConfigKey

pub type ConfigKey<'a> = CacheKey<'a>;

Config key, ConfigSource use this key to access config properties.

It’s designed for better querying sources.

Config key has a normalized string representation, it is composed by multiple partial keys, which are &str or usize. We use dot(.) and square bracket [] to separate partial keys in a config key.

Partial Key

String Partial Key

String partial key has regex pattern [a-z][_a-z0-9], usually string partial keys are separated by dot(.). For example: cfg.k1.

Index Partial Key

Index partial keys are usize values, which is around by a pair of square bracket. For example: [0], [1].

Config Key

Config key is composed by partial keys. String partial key can be followed by index partial key for zero or more times. If the string config key is not in head, then it should after a dot(.). For example:

• cfg.v1
• cfg.v2[0]
• cfg.v3[0][1]
• cfg.v4.key
• cfg.v5.arr[0]
• [0]

Please notice that cfg.[0] is invalid key.

Aliased Type

pub struct ConfigKey<'a> { /* private fields */ }