Struct Error 

pub struct Error(/* private fields */);

Lightweight error type wrapping an i32 error code.

This type is designed for no_std environments and minimal overhead. Contracts return error codes to the runtime, which propagates them to clients.

Error Code Ranges

• 0: Success (OK)
• 1-9: Core SDK errors
• 10-19: ABI/calldata errors
• 20-29: Codec/serialization errors
• 30-39: Storage errors
• 40-49: Validation errors (require)
• 100+: Contract-specific errors

Implementations

impl Error

pub const OK: i32 = 0

Success code (no error).

pub const fn new(code: i32) -> Self

Creates a new error with the specified code.

Arguments

• code - The error code (non-zero indicates failure)

Example

const ERR_UNAUTHORIZED: i32 = 100;
return Err(Error::new(ERR_UNAUTHORIZED));

pub const fn code(self) -> i32

Returns the error code.

Example

let err = Error::new(100);
assert_eq!(err.code(), 100);

pub const fn is_ok(self) -> bool

Checks if this error represents success (code == 0).

Example

let ok = Error::new(0);
assert!(ok.is_ok());

let err = Error::new(100);
assert!(!err.is_ok());

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Error

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Error

impl From<i32> for Error

fn from(value: i32) -> Self

Converts to this type from the input type.

impl PartialEq for Error

fn eq(&self, other: &Error) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Error