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How does collections.defaultdict work?
...interesting when the values in a dictionary are collections (lists, dicts, etc.) In this case, the value (an empty list or dict) must be initialized the first time a given key is used. While this is relatively easy to do manually, the defaultdict type automates and simplifies these kinds of operatio...
Make sure only a single instance of a program is running
... me to notify the running instance, so it creates another window, pops up, etc.
– WhyNotHugo
Jun 17 '11 at 3:16
1
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How to use ng-repeat without an html element
...he simply wanted to generate an open-tag, then a close tag somewhere else, etc.. just like in the good old days when we would concat our html from strings.. right? no.
as for flattening the structure into a list, here's another solution:
// assume the following structure
var structure = [
{
...
Python memory usage of numpy arrays
...ngling' numpy.ndarray's, in particular the ones that are stored in _1, _2, etc that were never really meant to stay alive.
I use this code to get a listing of all of them and their size.
Not sure if locals() or globals() is better here.
import sys
import numpy
from humanize import naturalsize
...
Pythonic way to find maximum value and its index in a list?
...function lambda x: a[x], which says that 0 is actually 2, 1 is actually 9, etc.
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SHFileOperation 这个API函数怎么用起来结果飘忽不定？ - C/C++ - 清泛网 -...
...，笔者亲测，删除有时成功有时失败。
解决：
改用C++的FindNextFile，支持 * 通配符查找文件，核心代码如下：
WIN32_FIND_DATA FindFileData;
char szCurPath[MAX_PATH + 1] = { 0 };
GetCurrentDirectory(MAX_PATH, szCurPath);
CString findFileName;
findFileName....
MultiPlatform版OBS（Open Broadcaster Software）流媒体视频开源软件安装...
...QT下载vs2013版本，cmake也生成vs2013版本，上图为vs2012版本的截图）。
OK。Software, 开源软件, 流媒体, OBS, C99
错误解决:Xcode not set up properly. You may need to confirm the licens...
... Xcode -> Preferences -> Locations - > Command Line Tools
#设置好xcode的安装位置
或
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sudo -i xcode-select -switch /Applications/Xcode6-Beta6.app/Contents/Developer
根据具体路径：
（sudo xcode-select -switch...
一款IP：端口监控工具 服务器端口监控工具[附源码] - C++ UI - 清泛IT社区...
...监控ip:port，类似于telnet命令。
界面清晰简洁，异常连接的情况一目了然。
支持添加、编辑、删除、移动ip:port组合，可监控多组，支持ip:port备注。
支持自动刷新，刷新间隔可配置，同时也可手动刷新。
支持连接异常报警（P...
Win7禁用休眠 减少C盘容量占用 - 脚本技术 - 清泛IT社区，为创新赋能！
...容量占用减少立即生效。
另外，减少C盘容量占用常见的还有：将虚拟内存位置改到C盘以外。
设置完成后，需要重启计算机方可生效。
傻瓜式终极解决方案：使用CCleaner工具进行清理。http://www.tsingfun.com/html/201 ... 5343_pro_g...