u32err

此crate通过在u32上包装一层实现了core::ops::Try特质。

您可以使用它为返回非零值的FFI函数实现优雅的错误处理，或者作为轻量级的Result。

示例

use u32err::ErrCode;
extern "C" {
    /// This is a function that does something (via FFI).
    ///
    /// It returns either a 0 on success, or a non-zero number on failure.
    /// The real FFI signature of this function returns [`u32`], but the types are compatible.
    fn returns_zero_on_success() -> ErrCode;
}

fn foo() -> ErrCode {
    unsafe {
        returns_zero_on_success()?;
    }
    ErrCode(0)
}

lib.rs:

u32err

此crate通过在core::ops::Try特质上包装一层实现了u32。

您可以使用它为返回非零值的FFI函数实现优雅的错误处理，或者作为轻量级的Result。

示例

use u32err::ErrCode;
extern "C" {
    /// This is a function that does something (via FFI).
    ///
    /// It returns either a 0 on success, or a non-zero number on failure.
    /// The real FFI signature of this function returns [`u32`], but the types are compatible.
    fn returns_zero_on_success() -> ErrCode;
}

fn foo() -> ErrCode {
    unsafe {
        returns_zero_on_success()?;
    }
    ErrCode(0)
}