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LiveInternet.ru:
: 29.07.2007
:
:
: 80

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goto vs break & continue

, 18 2020 . 16:35 +
applegame:
Wound @
De, TTF_CloseFont, scope(exit) - TTF_Quit. , scope(exit) TTF_Quit, De, TTF_CloseFont. ?
, scope(exit), . TTF_Quit . , TTF_Quit .
, :
AFTER the scope(exit) statements
AFTER exit from the function scope
scope(exit) .
Wound @
. . . , RAII , .
scope(exit) delete(ptr) . - , , ?
Wound @
, ! , . RAII , ? ?
. . return, ( unique_ptr , ), , . .
Wound @
, ! ++ . , . !
. D . scope(exit) GC. !
Wound @
? . RAII - . .
? . scope(exit) - . .
Wound @
D - , .
. - scope(exit) - .
Wound @
goto , . scope(exit) - , - , GC. .
, scope(...) . GC GC. scope(...)?
Wound @
- , .
scope(...). http- http-:
    auto handleHTTPRequest(...) {
    activeRequests.atomicIncrement();
    scope(exit) activeRequests.atomicDecrement();
    scope(success) successRequests.atomicIncrement();
    ...
    if(...) return result1;
    ...
    if(...) throw Error1;
    ...
    if(...) return result2;
    ...
    if(...) throw Error2;
    ...
    }
, ?
Wound @
- try/catch/finally, finally. , , finally GC JAVA/C#. .
D, try/catch/finally Java, finally - try/catch/finally, try/catch.

, . - , . , C# try-catch-finally. , finally try-catch, try-finally catch.
Wound @
std::fstream - RAII FILE* . 10 , 10 , , , , , , ... .. , , .
, . RAII .
Wound @
, scope(exit), , RAII . .
, RAII . RAII, scope(exit), , , :)
    // , RAII-
    void useFile(F fn)(string name, F fn) {
    auto file = open(name);
    scope(exit) close(file);
    fn(file);
    }
    void onClick(data) {
    //
    useFile("hello.txt", (file) {
    ...
    write(file, data);
    ...
    data1 = read(file);
    ...
    });
    }

https://forum.sources.ru/index.php?showtopic=362619&view=findpost&p=3834547

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