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BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...银行取钱，然后给你（使用异步IO时，Java将IO读写委托给OS处理，需要将数据缓冲区地址和大小传给OS(银行卡和密码)，OS需要支持异步IO操作API）；
阻塞 ： ATM排队取款，你只能等待（使用阻塞IO时，Java调用会一直阻塞到读写完...
How do I concatenate multiple C++ strings on one line?
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answered Mar 19 '09 at 16:27
Paolo TedescoPaolo Tedesco
48k2828 gold badges126126 silver badges178178 bronze badges
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Cannot overwrite model once compiled Mongoose
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answered Sep 27 '13 at 13:24
thtsigmathtsigma
3,97222 gold badges2525 silver badges2929 bronze badges
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Longest line in a file
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275
Using wc (GNU coreutils) 7.4:
wc -L filename
gives:
101 filename
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Using the Android Application class to persist data
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Vit KhudenkoVit Khudenko
27.3k1010 gold badges5252 silver badges8686 bronze badges
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How to permanently add a private key with ssh-add on Ubuntu? [closed]
...cessible to all.
Additionally if you want to set the key specific to one host, you can do the following in your ~/.ssh/config :
Host github.com
User git
IdentityFile ~/.ssh/githubKey
This has the advantage when you have many identities that a server doesn't reject you because you tried t...
“You have mail” message in terminal, os X [closed]
...discovered is this.
Something I'd installed (not entirely sure what, but possibly a script or something associated with an Alfred Workflow [at a guess]) made a change to the OS X system to start presenting Terminal bash notifications. Prior to that, it appears Wordpress had attempted to use the Loc...
How to print a list of symbols exported from a dynamic library
...s, however.
– Slipp D. Thompson
Apr 27 '16 at 4:32
add a comment
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open() in Python does not create a file if it doesn't exist
...ating (note that 'w+' truncates the file).
– SilentGhost
Jun 3 '10 at 15:16
4
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live output from subprocess command
...file.
– Guy Sirton
Aug 24 '13 at 19:27
14
With Python 3, you need iter(process.stdout.readline, b...