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Convert.ChangeType() fails on Nullable Types

...a series of blog posts including this at http://www.endswithsaurus.com/2010_07_01_archive.html (Scroll down to the Addendum, @JohnMacintyre actually spotted the bug in my original code which led me down the same path you're on now). I have a couple of small modifications since that post that includ...
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64 bit OS下int占几个字节? - C/C++ - 清泛网 - 专注C/C++及内核技术

...混淆。int是由编程语言设计决定的,不受编译器的影响。__int64才是8位的。另外,指针是受编译器 OS影响的,3...int固定4字节,不要受64 bit的混淆。int是由编程语言设计决定的,不受编译器的影响。 __int64才是8位的。 另外,指...
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PHP 错误记录和聚合的平台Sentry实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...会丢失旧日志中的数据,而 logtail2 不会。 <?php require_once __DIR__ . '/raven-php/lib/Raven/Autoloader.php'; Raven_Autoloader::register(); $dsn = 'http://your/dsn'; $options = array( 'tags' => array( 'php_version' => phpversion(), ), 'trace' => f...
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Discuz 找回密码时提示参数错误 - 更多技术 - 清泛网 - 专注C/C++及内核技术

Discuz 找回密码时提示参数错误source module member member_getpasswd.php第32行找到$uid = $_GET['uid'];在下方添加一行$sign = $_GET['sign'];tem...source\module\member\member_getpasswd.php 第32行找到 $uid = $_GET['uid']; 在下方添加一行 $sign = $_GET['sign']; t...
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jQuery控制图片的hover效果,不能通过css设置img的src属性 - 更多技术 - 清...

...(function() { $(this).attr("src",$(this).attr("src").replace("_out","_over")); },function() { $(this).attr("src",$(this).attr("src").replace("_over","_out")); }); }); </script> 亲测有效。图片 img hover
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mfc 按钮变成了非xp风格、界面变成windows经典样式? - C++ UI - 清泛IT社...

...格          xp风格 stdafx.h中添加: #ifdef _UNICODE #if defined _M_IX86 #pragma comment(linker,&quot;/manifestdependency:\&quot;type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='x86' publicKeyToken='6595b64144ccf1df' langu...
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warning C4996 - c++1y / stl - 清泛IT社区,为创新赋能!

warning C4996: '_vsnprintf': This function or variable may be unsafe. ......warning C4996: strcpy was declared deprecated出现这样的警告,是因为VC2005之后的版本中认为CRT中的一组函数如果使用不当,可能会产生诸如内存泄露、缓冲区溢出、非法访问等安...
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【解决】C、C++混合编译link失败问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

【解决】C、C++混合编译link失败问题c_cpp_mixed_compileC、C++混合编译时,C头文件不加 extern "C",函数按照C++编译会改变函数名称,导致link时报undefined reference to `xxx` 的 错误。加 extern "C" 解决,但是直接加的话 C、C++混合编译时,C...
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reactjs中防止字符转义,字符串不转义 - 更多技术 - 清泛网 - 专注IT技能提升

...即可,注意:必须是这种写法:<span dangerouslySetInnerHTML={{__html: & 39;<font color="red">ERROR< font>& 39;}}>(此处必须为空! 使用标签的 dangerouslySetInnerHTML 属性即可,注意:必须是这种写法: <span dangerouslySetInnerHTML={{__html: '<font color="red">ERR...
https://www.tsingfun.com/it/bigdata_ai/2541.html 

tinygrad:不到1000行代码的深度学习框架,天才黑客开源GitHub 2.3k+ stars...

...rt Tensor import tinygrad.optim as optim from tinygrad.utils import layer_init_uniform class TinyBobNet: def __init__(self): self.l1 = Tensor(layer_init_uniform(784, 128)) self.l2 = Tensor(layer_init_uniform(128, 10)) def forward(self, x): return x.dot(self.l1).re...