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C#定点任务代码 类似Windows计划任务（健壮性高） - 更多技术 - 清泛网移动...
...运行考验，可靠性、健壮性极高。C#只提供Timer定时器（C++ SetTimer 类似），通过设置一个时间间隔来定时触发执行任务。那么定点执行任务怎么实现呢？
原理：每次通过计算得出下次定点任务与现在时点的事件间隔，作为Timer的...
C#定点任务代码 类似Windows计划任务（健壮性高） - 更多技术 - 清泛网 - ...
...运行考验，可靠性、健壮性极高。C#只提供Timer定时器（C++ SetTimer 类似），通过设置一个时间间隔来定时触发执行任务。那么定点执行任务怎么实现呢？
原理：每次通过计算得出下次定点任务与现在时点的事件间隔，作为Timer的...
How to automatically crop and center an image
...="center-cropped"
style="background-image: url('http://placehold.it/200x200');">
</div>
Example with img tag
This version retains the img tag so that we do not lose the ability to drag or right-click to save the image. Credit to Parker Bennett for the opacity trick.
....
HTTP status code for update and delete?
...
For a PUT request: HTTP 200 or HTTP 204 should imply "resource updated successfully".
For a DELETE request: HTTP 200 or HTTP 204 should imply "resource deleted successfully". HTTP 202 can also be returned which would imply that the instruction was ...
Retina displays, high-res background images
...d:url('images/box-bg@2x.png') no-repeat top left;
background-size: 200px 200px;
}
}
EDIT
To add a little more to this answer, here is the retina detection query I tend to use:
@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and ( min--moz-device-pixel-rati...
Draw Circle using css alone [duplicate]
...a circle (25CF).
.circle:before {
content: ' \25CF';
font-size: 200px;
}
<span class="circle"></span>
I suggest this as border-radius won't work in IE8 and below (I recognize the fact that the suggestion is a bit mental).
...
How to return a 200 HTTP Status Code from ASP.NET MVC 3 controller
...ssing code here
//If not using MVC5
return new HttpStatusCodeResult(200);
//If using MVC5
return new HttpStatusCodeResult(HttpStatusCode.OK); // OK = 200
}
share
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improve this answe...
CSS3 background image transition
...iv class="images-container">
<img src="http://lorempixel.com/400/200/animals/9/">
<img src="http://lorempixel.com/400/200/animals/10/">
</div>
with CSS3 selectors http://jsfiddle.net/eD2zL/1/ (if you use this one, "normal" state will be first child your container, or ...
std::string截取字符串，截取ip:port - c++1y / stl - 清泛IT社区，为创新赋能！
std::string ip("127.0.0.1:8888");
int index = ip.find_last_of(':');
// 获取ip
ip.substr(0, index).c_str();
// 获取port
ip.substr(index + 1).c_str();
App Inventor 2 如何分解字符串？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
使用文本的“分解”函数即可，文档直达：https://www.fun123.cn/reference/blocks/text.html#split