[−][src]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>`[src]

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<()>`[src]

`pub fn from(meta: Option<Meta>) -> Result<Self>`[src]

`impl FromMeta for Vec<Ident>`[src]

`pub fn from(meta: Option<Meta>) -> Result<Self>`[src]

`impl FromMeta for Option<Vec<Ident>>`[src]

`pub fn from(meta: Option<Meta>) -> Result<Self>`[src]

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Implementors

`impl<F: FromLit> FromMeta for F`[src]

`pub fn from(meta: Option<Meta>) -> Result<Self>`[src]

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