Template result container with typed error information 더 자세히 ...

#include <tres.hpp>

by::tres< T, R >에 대한 상속 다이어그램 :

Public 멤버 함수
	tres (const T &value)

	tres (const R &value)

R &	getErr ()
	Gets the contained error.

const R &	getErr () const BY_CONST_FUNC(getErr()) void rel() override
	Releases/clears both the contained value and the error, making the instance empty.

void	set (const T &arg) override
	Sets the contained value and clears any existing error.

void	setErr (const R &arg)
	Sets the contained error and clears any existing value.

by::tmay< T >(으)로부터 상속된 Public 멤버 함수
	tmay (const T &value)

	tmay (const tmedium< T > &value)

T *	operator-> ()

const T *	operator-> () const BY_CONST_FUNC(operator->())

T &	operator* ()

const T &	operator* () const BY_CONST_FUNC(operator*())

	operator T& ()

	operator const T & () const

	operator nbool () const

nbool	has () const

T *	get ()
	Gets the contained value.

const T *	get () const BY_CONST_FUNC(get()) virtual void rel()
	Releases/clears the contained value, making the instance empty.

상세한 설명

template<typename T, typename R>
class by::tres< T, R >

Template result container with typed error information

Identical to tmay but allows defining a custom error type when errors occur. While tmay<T> can only indicate whether an error occurred or not, tres<T, R> can provide detailed error information of type R when an error occurs.

Usage

Example comparing tmay and tres:

// Using tmay - can only tell if error occurred:
tmay<int> result1 = parseNumber("abc");
if(!result1.has()) {
    // Know there's an error, but not what kind
}
 
// Using tres - can get error details:
tres<int, std::string> result2 = parseNumber("abc");
if(!result2.has()) {
    std::string errorMsg = result2.getErr(); // Get specific error message
    BY_E("Parse failed: %s", errorMsg.c_str());
}

Common error types include std::string for error messages, or custom error enums for categorized error handling.

멤버 함수 문서화

◆ getErr()

template<typename T , typename R >

R & by::tres< T, R >::getErr ( )

Gets the contained error.

경고: Should only be called when has() returns false. Accessing when has() is true results in undefined behavior.

반환값: A reference to the contained error object.

◆ set()

template<typename T , typename R >

void by::tres< T, R >::set ( const T & arg )

overridevirtual

Sets the contained value and clears any existing error.

by::tmay< T >(으)로부터 재구현되었습니다.

이 클래스에 대한 문서화 페이지는 다음의 파일로부터 생성되었습니다.:

/home/runner/work/byeol/byeol/module/indep/helper/tres.hpp

Public 멤버 함수

상세한 설명

Usage

멤버 함수 문서화

◆ getErr()

◆ set()