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Detecting iOS / Android Operating system
...obile operating system.
* This function returns one of 'iOS', 'Android', 'Windows Phone', or 'unknown'.
*
* @returns {String}
*/
function getMobileOperatingSystem() {
var userAgent = navigator.userAgent || navigator.vendor || window.opera;
// Windows Phone must come first because its UA...
How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)?
...java -d32 -version to verify you are not running 32-bit. Both wish work on Win7.
– Xonatron
Feb 2 '12 at 20:34
...
unable to copy/paste in mingw shell
I just installed MinGW on Windows and I'm unable to copy/paste as I am used to on Linux or even PuTTY. What is the trick for copying and pasting text (e.g. from chrome) into MinGW shell?
...
How do I replace a character at a particular index in JavaScript?
...
There is no replaceAt function in JavaScript. You can use the following code to replace any character in any string at specified position:
function rep() {
var str = 'Hello World';
str = setCharAt(str,4,'a');
alert(str);
}
function setCharAt(str,index,chr) {
if(index >...
FloatActionBtn 扩展：悬浮操作按钮扩展，可自定义颜色、大小、图标和位置 ...
... 圆角控制
✅ 支持
❌ 不支持
动态生成
✅ 支持多按钮
❌ 单按钮
临时隐藏
✅ 支持
❌ 不支持
图标设置
文件路径
资源名称
功能复杂度
...
FileSystemWatcher vs polling to watch for file changes
... This is not a limitation of the .NET class per se, but of the underlying Win32 infrastructure. In our experience, the best way to minimize this problem is to dequeue the notifications as quickly as possible and deal with them on another thread.
As mentioned by @ChillTemp above, the watcher may n...
How to get a vertical geom_vline to an x-axis of class date?
...
on my machine (Win10 with R 3.2.2 and ggplot 1.0.1), I have to coerce the date to POSIXct to get it to align properly: as.POSIXct(as.Date(c("2016-12-01","2017-02-01")))
– Jthorpe
Jul 28 '17 at 17:36
...
XAMPP - Port 80 in use by “Unable to open process” with PID 4! 12
...
Open a CMD prompt as administrator and execute the following command:
net stop was /y
Open the Run dialog box (press Win+R), then type: services.msc
Then search for World Wide Web Publishing Service (WWW-Publishing Service) and Web Deployment Agent Service and stop them. You s...
记录一些Mac OS X技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。
删除.DS_Store文件
只要用Finder打开文件夹，就会自动生成这些文件，无法禁止这行为，但可以使用这行代码删除（sudo是为了删除一些没权限访问的文件）：
sudo find / -name ".DS_Store" -delete
管理Dashboard里的widgets
按F4或fn-F12...
How to initialize private static members in C++?
... one of our .cpp files? It will compile fine and we will have no way of knowing which one wins until we run the program.
Never put executed code into a header for the same reason that you never #include a .cpp file.
include guards (which I agree you should always use) protect you from something di...