Trait core::str::FromStr
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pub trait FromStr { type Err; fn from_str(s: &str) -> Result<Self, Self::Err>; }
A trait to abstract the idea of creating a new instance of a type from a string.
Associated Types
type Err
The associated error which can be returned from parsing.
Required Methods
fn from_str(s: &str) -> Result<Self, Self::Err>
Parses a string s
`s` to return a value of this type.
If parsing succeeds, return the value inside Ok
`Ok, otherwise when the string is ill-formatted return an error specific to the inside
`, otherwise
when the string is ill-formatted return an error specific to the
inside Err
`Err`. The error type is specific to implementation of the trait.