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程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...也可以制作自签名的证书，但是需要别人认可你，这个在企业内部或者开发阶段是可以，我们可以自己制作一个证书添加到操作系统里。
那么，问题来了，当你访问https://www.12306.cn 时，你就会得到下面的结果
这是为什么呢？...
Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...务器,我们需要用户指定一个服务器(如time-nw.nist.gov),用IP亦可.
(译者注:日期查询协议,这种时间传输协议不指定固定的传输格式，只要求按照ASCII标准发送数据。)
using boost::asio::ip::tcp;
int main(int argc, char* argv[])
{
try
{
...
Reduce left and right margins in matplotlib plot
...e margin. In other words, if you want to bring the right edge margin in by 10%, you should set right=0.9, not right=0.1 matplotlib.sourceforge.net/api/…
– drootang
Nov 18 '11 at 16:18
...
How do I rename all folders and files to lowercase on Linux?
...in different directory structures. The original accepted answer did barely 10% the work in 2 minutes where this, with the -0 compression, was almost instant!
– Peon
Feb 1 '17 at 13:14
...
Counting null and non-null values in a single query
... @EvilTeach: Indexes are only helpful when you're not pulling back > ~10% of the rows. After that, full scans are initiated. In this case, you'll get the scan at least once, if not twice.
– Eric
Aug 13 '09 at 13:22
...
Adding div element to body or document in JavaScript
...ument.createElement('div');
elemDiv.style.cssText = 'width:100%;height:10%;background:rgb(192,192,192);';
elemDiv.innerHTML = 'Added element with some data';
window.document.body.insertBefore(elemDiv, window.document.body.firstChild);
// document.body.appendChild(elemDiv); // append...
How random is JavaScript's Math.random?
...tice an even distribution across that range if you pick number many times. 10% will be two digit and 90% three digit. When you start to hit really high numbers though, the increment will exceed 1. You might only be able to step from a trillion billion to a trillion billion one thousand and not a tri...
IEnumerable and Recursion using yield return
...0171/284795 it scales explosively with depth (a similar function was using 10% of memory in my app).
A simple solution is to use one list and pass it with the recursion https://codereview.stackexchange.com/a/5651/754
/// <summary>
/// Append the descendents of tree to the given list.
/// <...
How to make gradient background in android
...rent.
<gradient
android:type="radial"
android:gradientRadius="10%p"
android:startColor="#f6ee19"
android:endColor="#115ede" />
type="sweep"
I don't know why anyone would use a sweep, but I am including it for completeness. I couldn't figure out how to change the angle, s...
CSS opacity only to background color, not the text on it? [duplicate]
...responds to 100% (full opacity).
RGBa example
rgba(51, 170, 51, .1) /* 10% opaque green */
rgba(51, 170, 51, .4) /* 40% opaque green */
rgba(51, 170, 51, .7) /* 70% opaque green */
rgba(51, 170, 51, 1) /* full opaque green */
A small example showing how rgba can be used.
As of ...