Trait macro_input_core::FromMeta

pub trait FromMeta: Sized {
    pub fn from(meta: Option<Meta>) -> Result<Self>;
}

a trait for extracting a value from Option<syn::Meta>

Required methods

pub fn from(meta: Option<Meta>) -> Result<Self>

extract the value

Errors

may return an Error if the meta doesn't contain the correct value

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Implementations on Foreign Types

impl FromMeta for Option<()>

pub fn from(meta: Option<Meta>) -> Result<Self>

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Implementors

impl<F: FromLit> FromMeta for F

pub fn from(meta: Option<Meta>) -> Result<Self>

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