Implement apply attribute #85
#524
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524: Start work on an `apply` attribute #85 r=jonasbb a=jonasbb This `apply` proc-macro takes a list of type patterns and a list of attributes for each. On each field where the type matches, the list of attributes will be added to the existing field attributes. ```rust #[serde_with::apply( Option => #[serde(default)] #[serde(skip_serializing_if = "Option::is_none")], Option<bool> => #[serde(rename = "bool")], )] #[derive(serde::Serialize)] struct Data { a: Option<String>, b: Option<u64>, c: Option<String>, d: Option<bool>, } ``` The `apply` attribute will expand into this, applying the attributs to the matching fields: ```rust #[derive(serde::Serialize)] struct Data { #[serde(default)] #[serde(skip_serializing_if = "Option::is_none")] a: Option<String>, #[serde(default)] #[serde(skip_serializing_if = "Option::is_none")] b: Option<u64>, #[serde(default)] #[serde(skip_serializing_if = "Option::is_none")] c: Option<String>, #[serde(default)] #[serde(skip_serializing_if = "Option::is_none")] #[serde(rename = "bool")] d: Option<bool>, } ``` bors r+ Co-authored-by: Jonas Bushart <jonas@bushart.org>
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apply attribute #85apply attribute #85
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Switch from from_timestamp to from_timestamp_opt.
This `apply` proc-macro takes a list of type patterns and a list of attributes for each. On each field where the type matches, the list of attributes will be added to the existing field attributes.
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bors r+ |
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This
applyproc-macro takes a list of type patterns and a list of attributes for each. On each field where the type matches, the list of attributes will be added to the existing field attributes.The
applyattribute will expand into this, applying the attributs to the matching fields:bors r+