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AppInventor2 如何实现屏幕截屏并将图片拷贝/分享？ - App Inventor 2 中文...
...用法很简单，截屏完成后会触发事件，参数给出截屏图片的路径，存储在 app 的私有目录，通过手机文件管理器就可以查看。
app 私有目录路径参考：
将截图图片分享出去：社交应用，信息分享器 组件
类似文件分享...
Print all properties of a Python Class [duplicate]
...rint for example in order of declaration, and you do not want to do it manually, check this
– Matteo A
Aug 14 '15 at 8:41
...
Difference between __getattr__ vs __getattribute__
... the attribute wasn't found the usual ways. It's good for implementing a fallback for missing attributes, and is probably the one of two you want.
__getattribute__ is invoked before looking at the actual attributes on the object, and so can be tricky to implement correctly. You can end up in infi...
Build a Basic Python Iterator
...
Iterator objects in python conform to the iterator protocol, which basically means they provide two methods: __iter__() and __next__().
The __iter__ returns the iterator object and is implicitly called
at the start of loops.
The __next__() method returns the next value and is implicitly cal...
What do all of Scala's symbolic operators mean?
...se of teaching, into four categories:
Keywords/reserved symbols
Automatically imported methods
Common methods
Syntactic sugars/composition
It is fortunate, then, that most categories are represented in the question:
-> // Automatically imported method
||= // Syntactic sugar
++= // Syn...
What is the most efficient way of finding all the factors of a number in Python?
Can someone explain to me an efficient way of finding all the factors of a number in Python (2.7)?
22 Answers
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一款IP:端口监控工具 服务器端口监控工具[附源码] - C/C++ - 清泛网 - 专注...
...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 TradeMonitor v1.0
功能介绍：
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、...
MFC ListCtrl中实现多行SubItems子项可编辑效果 - 源码下载 - 清泛网 - 专...
...ubItems子项可编辑效果，可以编辑SubItems并且可以多行编辑的ListCtrl。源码为vc6.0工程，可直接运行。MFC ListCtrl列表控件中实现多行SubItems子项可编辑效果，可以编辑SubItems并且可以多行编辑的ListCtrl。
源码为vc6.0工程，可直接运行...
一款IP：端口监控工具 服务器端口监控工具 - 软件下载 - 清泛网 - 专注C/C+...
...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...TradeMonitor v1.0
功能介绍：
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、...
C++程序结果出现1.#inf 1.#IO - C/C++ - 清泛IT论坛，有思想、有深度
表象原因：浮点数越界了（超过FLT_MAX最大值了），1.#IO是 %lf 格式化出来的字符串。
极可能原因：除0了，也就是f1 = f2 / 0。
做任何除法时，分母为零的判断不可少。