Function is_code_err

crates/result/src/error_code.rs:203–205

Returns `true` when the code is a known, registered error code. Mirrors Go `xerr.IsCodeErr`.

(err_code: u32)

///
/// Mirrors Go `xerr.IsCodeErr`.
pub fn is_code_err(err_code: u32) -> bool {
    MESSAGES.contains_key(&err_code)
}

#[cfg(test)]
mod tests {