A
Size: a a a
A
S
G
G
A
A
G
Result<T, FirstError | SecondError>G
A
Result<T, FirstError | SecondError>r
let s = file.read()?; let foo = s.parse()?A
G
let s = file.read()?; let foo = s.parse()?AZ
G
Result<Content, ParseError>r
AZ
Result<Content, ParseError>AZ
G
AZ
AZ