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OptionalExtension

rusqlite

Trait OptionalExtension 

Source 
pub trait OptionalExtension<T> {
    // Required method
    fn optional(self) -> Result<Option<T>>;
}
Expand description

See the method documentation.

Required Methods§

Source

fn optional(self) -> Result<Option<T>>

Converts a Result<T> into a Result<Option<T>>.

By default, Rusqlite treats 0 rows being returned from a query that is expected to return 1 row as an error. This method will handle that error, and give you back an Option<T> instead.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§