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How can I extract embedded fonts from a PDF as valid font files?
...y you will see a variety of files: images as well as fonts. These include PNG, TTF, CFF, CID, etc. The image names will be like img-0412.png if the PDF object number of the image was 412. The fontnames will be like FGETYK+LinLibertineI-0966.ttf, if the font's PDF object number was 966.
CFF (Compact...
Using HTML5/Canvas/JavaScript to take in-browser screenshots
...creen
html2canvas(region, {
onrendered: function(canvas) {
let pngUrl = canvas.toDataURL(); // png in dataURL format
let img = document.querySelector(".screen");
img.src = pngUrl;
// here you can allow user to set bug-region
// and send it with 'pngUrl' to serve...
动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...，对那些超过一秒总延时的请求进行分析。该工具会直接测试这些问题请求内部的时间分布，包括请求处理过程中各个典型 I/O 操作的延时以及纯 CPU 计算延时。结果很快定位到是 OpenResty 在访问 Go 编写的 DNS 服务器时，出现延时...
原子vector的一种实现源码(atomic-vector) - C/C++ - 清泛网 - 专注C/C++及内核技术
...原子交换，扩容采用链表的形式，代码可直接运行。
测试代码：
HPHP::AtomicVector<float> v_atom(2, 0.f);
void atom_vector_hphp() {
v_atom.exchange(0, 1);
v_atom.exchange(1, 2);
}
atomic vector folly
通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...缓存被激活，运行于静态模式，数据通过缓存渲染。通过测试发现，系统在从正常切换到异常时，因为舍弃了PHP-FPM，所以RPS从一千跃升到一万。这让我想起儿时看圣斗士的情景：每当不死鸟一辉被敌人击倒后，他总能重新站起...
adito-gateway -华为云免费SSL VPN解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...解决方法：
yum install glibc.i686
再次运行 ant start
在测试时已经能进入网页https://服务器IP地址,但是用超级用户不能登录,重启下服务器即可
#reboot
登录http://ip
上传插件 点击Extension Manager 右上角的Upload Exension
...
What is a correct mime type for docx, pptx etc?
...fr", "pgn": "application/x-chess-pgn", "pgm": "image/x-portable-graymap", "png": "image/x-png", "ppm": "image/x-portable-pixmap", "pskcxml": "application/pskc+xml", "pml": "application/vnd.ctc-posml", "ai": "application/postscript", "pfa": "application/x-font-type1", "pbd": "application/vnd.powerbui...
LEGO EV3 机器人传感器面板 · App Inventor 2 中文网
...对的设备
观察数据：观察屏幕上实时更新的传感器值
测试触碰：按下 EV3 的触碰传感器按钮，观察颜色变化
传感器数据说明
颜色传感器（光线强度模式）
值范围
说明
...
Hide horizontal scrollbar on an iframe?
... chrome at least on my computer. img339.imageshack.us/img339/6685/chromelj.png
– l46kok
Feb 6 '13 at 1:52
1
...
Generating matplotlib graphs without a running X server [duplicate]
...lt.figure()
ax = fig.add_subplot(111)
ax.plot(range(10))
fig.savefig('temp.png')
You don't have to use the Agg backend, as well. The pdf, ps, svg, agg, cairo, and gdk backends can all be used without an X-server. However, only the Agg backend will be built by default (I think?), so there's a goo...