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std::iostream_category

提供: cppreference.com
< cpp‎ | io

 
 
入力/出力ライブラリ
I / Oのマニピュレータ
CスタイルのI / O
バッファ
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(廃止予定)
ストリーム
Original:
Streams
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抽象化
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
ファイルI / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
文字列I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
アレイのI / O
Original:
Array I/O
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istrstream(廃止予定)
ostrstream(廃止予定)
strstream(廃止予定)
タイプ
Original:
Types
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streamoff
streamsize
fpos
エラーカテゴリインターフェース
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
Defined in header <ios>
const std::error_category& iostream_category();
(C++11およびそれ以降)
iostreamのエラーのための静的なエラーカテゴリオブジェクトへの参照を取得します。オブジェクトは、文字列error_category::name()へのポインタを返す仮想関数"iostream"をオーバーライドする必要があります。それは、タイプstd::ios_base::failureの例外が提供されたエラーコードを識別するために使用され.
Original:
Obtains a reference to the static error category object for iostream errors. The object is required to override the virtual function error_category::name() to return a pointer to the string "iostream". It is used to identify error codes provided in the exceptions of type std::ios_base::failure.
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目次

[編集] パラメータ

(なし)
Original:
(none)
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[編集] 値を返します

std::error_category由来不特定の実行時の型の静的オブジェクトへの参照.
Original:
A reference to the static object of unspecified runtime type, derived from std::error_category.
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[編集] 例外

noexcept specification:  
noexcept
  (C++11およびそれ以降)

[編集]

#include <iostream>
#include <fstream>
 
int main()
{
    std::ifstream f("doesn't exist");
    try {
        f.exceptions(f.failbit);
    } catch (const std::ios_base::failure& e) {
        std::cout << "Caught an ios_base::failure.\n"
                  << "Error category: " << e.code().category().name() << '\n';
    }
}

Output:

Caught an ios_base::failure.
Error category: iostream

[編集] も参照してください

ストリーム例外
Original:
stream exception
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(publicメンバクラスof std::ios_base) [edit]
(C++11)
IOストリーム·エラー·コード
Original:
the IO stream error codes
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(列挙) [edit]