關(guān)于換行

wutuobangduan

只有\(zhòng)n和\en不同，使用\n時每隔一秒輸出，而且結(jié)果換行了，使用\en時，不僅沒有換行，而且是隔了10秒后，所有結(jié)果一起輸出。
新手求解疑。

yestreenstars

我在我這里測試，兩個都是10s后才輸出，一個有換行，一個沒有~

wutuobangduan

回復(fù) 2# yestreenstars



   

jason680

回復(fù) 1#wutuobangduan

easy solution:
$| = 1;

-----------------------------------

http://blog.csdn.net/BeTalker/article/details/8362730
...
在背后搗鬼的就是IO 緩沖。默認(rèn)情況下，Perl的STDOUT是有緩沖的
...

-----------------------------------

$ perldoc perlvar
NAME
    perlvar - Perl predefined variables
    ...

    HANDLE->autoflush( EXPR )
    $OUTPUT_AUTOFLUSH
    $|      If set to nonzero, forces a flush right away and after every write
            or print on the currently selected output channel. Default is 0
            (regardless of whether the channel is really buffered by the
            system or not; $| tells you only whether you've asked Perl
            explicitly to flush after each write). STDOUT will typically be
            line buffered if output is to the terminal and block buffered
            otherwise. Setting this variable is useful primarily when you are
            outputting to a pipe or socket, such as when you are running a
            Perl program under rsh and want to see the output as it's
            happening. This has no effect on input buffering. See "getc" in
            perlfunc for that. See "select" in perlfunc on how to select the
            output channel. See also IO::Handle.

            Mnemonic: when you want your pipes to be piping hot.

wutuobangduan

回復(fù) 4# jason680


    非常感謝，很詳細。

pitonas

{:2_172:}  啊!! 好厲害!!感激!!

jason680 發(fā)表于 2014-02-24 03:25
回復(fù) 1#wutuobangduan

easy solution:
$| = 1;