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MySQL vs MongoDB 1000 reads
...very excited about MongoDb and have been testing it lately. I had a table called posts in MySQL with about 20 million records indexed only on a field called 'id'.
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Convert Django Model object to dict with all of the fields intact
How does one convert a Django Model object to a dict with all of its fields? All ideally includes foreign keys and fields with editable=False .
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How to remove an element from a list by index
...org/projects/python/trunk/Objects/listobject.c how PyList_GetItem() essentially returns ((PyListObject *)op) -> ob_item[i]; - the ith element of an array.
– glglgl
Sep 9 '13 at 7:53
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How does python numpy.where() work?
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How do they achieve internally that you are able to pass something like x > 5 into a method?
The short answer is that they don't.
Any sort of logical operation on a numpy array returns a boolean array. (i.e. __gt__, __lt__, etc all return boolea...
Format date and time in a Windows batch script
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All this can be done in just 2 lines using ordinary string replacement: stackoverflow.com/a/23558738/1879699
– Andreas
Apr 22 '16 at 9:34
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How to install Boost on Ubuntu
I'm on Ubuntu, and I want to install Boost. I tried with
7 Answers
7
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【解决】File does not reside within any path specified using proto_pat...
...lative) are equivalent (it's harder than you think).
总之就是看不懂的报错信息，大概是.proto文件没找到导致的，但明明就是正确地指定了文件路径。
解决：
加 -I 或 --proto-path ，指定.proto文件的路径即可解决。
# ./protoc --cpp_out=. ../main/...
Android商业模拟器如何使用？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...启动后，在模拟器设置中设置为手机模式，选择适合自己的分辨率。帮助菜单 –> AI伴侣信息，或直接点此下载AI伴侣apk安装包到电脑，然后模拟器菜单选择安装apk，完成AI伴侣App的安装并启动它。开始测试：连接 –> AI伴侣...
为什么切换笔记到文本框显示会出现乱码？ - App应用开发 - 清泛IT社区，为...
转：有会员提问，自己的笔记功能出现乱码如何解决？
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A：其实都不用去看具体代码，这里用的是“网络微数据库”，然后用的是默认参数，即MIT服务器，它不支持中文，就这么简单！
换国内的服务器就好...
如何在文本输入框中自动加入空格 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
如何在文本输入框中自动加入空格？已回复。
Q：输入的十六进制，每2个字符对应一个十六进制数，想显示的时候自动加上空格
A：这个只能加逻辑，遍历十六进制，每2位 然后拼接一个空格。