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auto_ptr is not dereferencable - C/C++ - 清泛网 - 专注C/C++及内核技术
...; // OK
pt1->someFunc(); // error! following a null pointer
} // as we go out of scope, pt2's destructor
// deletes the pointer, but pt1's does nothing
auto_ptr在拷贝时会转移内存控制权，例子中pt1赋值给pt2后，将内存管理权转移给pt2, 此时pt1指针为NULL。
aut...
Linux日志切分工具：Logrotate - 更多技术 - 清泛网 - 专注C/C++及内核技术
...rotate.conf」：
# see "man logrotate" for details
# rotate log files weekly
weekly
# keep 4 weeks worth of backlogs
rotate 4
# create new (empty) log files after rotating old ones
create
# uncomment this if you want your log files compressed
#compress
# RPM packages drop log ro...
bat 写注册表 及权限提升 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...s.exe" "%SYSTEMROOT%\system32\config\system"
REM --> If error flag set, we do not have admin.
if '%errorlevel%' NEQ '0' (
echo Requesting administrative privileges...
goto UACPrompt
) else ( goto gotAdmin )
:UACPrompt
echo Set UAC = CreateObject^("Shell.Application"^) > "%temp%\geta...
date(): It is not safe to rely on the system\'s timezone settings.解决...
... getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone.(2)
It is not safe to rely on the system解决方法,其实就是时区设置不正确造成的,本文提供了3种方法来解...
Eclipse XDebug配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...你直接改用XDebug吧。以下官方给出的解释。
The Debugger we provide supports only the non-thread-safe architecture, that is why it does not load in your configuration.
Zend stopped supporting the thread safe architecture when Microsoft also decided to implement its PHP engine wit...
App Inventor 2 上传文件到服务器的方案全总结 - App Inventor 2 中文网 - ...
1、图片Base64化，然后通过Web客户端POST文本的方式，发送数据，服务端base64解码后，存储文件。下载过程是Web客户端通过网络url下载文件到手机。
类似地，也可以将图片Base64化后分片存储到网络微数据库。下...
标签的“具有外边距”有啥用？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...youtParams();
// The following instanceof check will fail if we have not previously
// added the label to the container (Why?)
if (lp instanceof ViewGroup.MarginLayoutParams) {
marginLayoutParams = (ViewGroup.MarginLayoutParams) lp;...
Compare two objects and find the differences [duplicate]
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2 Answers
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Css height in percent not working [duplicate]
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8 Answers
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