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[解决]CTRL: PTY read or GRE write failed - 更多技术 - 清泛网 - 专注C/C++及内核技术
[解决]CTRL: PTY read or GRE write failedslove-pptpd-vpn-pty-read-or-gre-write-failedpptp vpn服务器连接失败出现以下日志内容:（查看系统日志[cat var log messages |grep pptpd]后发现）GRE: read(fd=6,buffer=80504c0...pptp vpn服务器连接失败出现以下日志内容：
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php动态安装mysql扩展错误（ext/mysqlnd/mysqlnd.h: No such file or direc...
php动态安装mysql扩展错误（ext/mysqlnd/mysqlnd.h: No such file or directory）错误如下：In file included from data xingzheng install php-5.5.10 include php Zend zend_compile.h:719, from ...错误如下：
In file included from /data/xingzheng/install/php-5.5.10/include/php/...
Get exit code of a background process
I have a command CMD called from my main bourne shell script that takes forever.
12 Answers
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#import using angle brackets < > and quote marks “ ”
...'m wondering what decides whether you're allowed to use <Header.h> or "Header.h" when you're importing files in Objective-C. So far my observation has been that you use the quote marks "" for files in your project that you've got the implementation source to, and angle brackets <>...
What is the proper way to re-throw an exception in C#? [duplicate]
I have a question for you that stems from my partner doing things a different way than I do.
9 Answers
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What is the difference between gravity and layout_gravity in Android?
...e View it's used on.
android:layout_gravity sets the gravity of the View or Layout relative to its parent.
And an example is here.
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Is using a lot of static methods a bad thing?
...a class when that class doesn't require to keep track of internal states. For example, if I need to transform A into B and don't rely on some internal state C that may vary, I create a static transform. If there is an internal state C that I want to be able to adjust, then I add a constructor to set...
What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
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This is more subtle: if(dict.ContainsKey(ikey)) dict[ikey]++; else dict.Add(ikey, 0);. But i think that TryGetValue is still more efficient since the get and set of the indexer property is used, isn't it?
– Tim...
Does Python have a string 'contains' substring method?
I'm looking for a string.contains or string.indexof method in Python.
10 Answers
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What are the pros and cons of performing calculations in sql vs. in your application
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It depends on a lot of factors - but most crucially:
complexity of calculations (prefer doing complex crunching on an app-server, since that scales out; rather than a db server, which scales up)
volume of data (if you need to access/aggregate a lot o...