Trait DecodeCandid 

pub trait DecodeCandid {
    // Required method
    fn decode_candid<T>(self) -> Result<T, String>
       where T: CandidType + for<'de> Deserialize<'de>;
}

Extension trait for decoding Candid responses from inter-canister calls.

This trait provides a convenient method to decode the response of an inter-canister call into a Rust type, combining error handling for both call failures and decoding failures.

Required Methods

fn decode_candid<T>(self) -> Result<T, String>

where T: CandidType + for<'de> Deserialize<'de>,

Decodes the response as a Candid type.

This method handles both the call result and Candid decoding in a single step, converting any errors into descriptive string messages.

Type Parameters

• T - The type to decode the response into. Must implement CandidType and Deserialize.

Returns

• Ok(T) - The successfully decoded response.
• Err(String) - An error message describing either the call failure or decoding failure.

Examples

let result: u32 = Call::bounded_wait(canister_id, "get_value")
    .await
    .decode_candid()?;

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl DecodeCandid for Result<Response, CallFailed>

fn decode_candid<T>(self) -> Result<T, String>

where T: CandidType + for<'de> Deserialize<'de>,

Implementors