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使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
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该项目是麻省理工学院 App Inventor 2011 年 Google Summer o<em>fem> Code 活动的一部分。它描述了使用 Google Cardboard SDK 为 App Inventor 添加虚拟功能的实验。有两个演示项目可以作为未来实验的基础。
简介
人们对虚拟现实 (VR) 和增强现实 (A...
Circular list iterator in Python
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Use itertools.cycle, that's its exact purpose:
<em>fem>rom itertools import cycle
lst = ['a', 'b', 'c']
pool = cycle(lst)
<em>fem>or item in pool:
print item,
Output:
a b c a b c ...
(Loops <em>fem>orever, obviously)
In order to manually advance the iterator and pull values <em>fem>ro...
Convenient C++ struct initialisation
I'm trying to <em>fem>ind a convenient way to initialise 'pod' C++ structs. Now, consider the <em>fem>ollowing struct:
13 Answers
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Read only the <em>fem>irst line o<em>fem> a <em>fem>ile?
How would you get only the <em>fem>irst line o<em>fem> a <em>fem>ile as a string with Python?
8 Answers
8
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Programmatically access currency exchange rates [closed]
I'm setting up an online ordering system but I'm in Australia and <em>fem>or international customers I'd like to show prices in US dollars or Euros so they don't have to make the mental e<em>fem><em>fem>ort to convert <em>fem>rom Australian dollars.
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How do I automatically sort a has_many relationship in Rails?
...swered Apr 10 '09 at 21:53
vrish88vrish88
15.9k88 gold badges3535 silver badges5353 bronze badges
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How to write log to <em>fem>ile
I'm trying to write to a log <em>fem>ile with Go.
11 Answers
11
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Location o<em>fem> sqlite database on the device
I've created a sqlite database programmatically with the de<em>fem>ault way o<em>fem> extending SQLiteOpenHelper and overriding onCreate() . This way the db gets created on the <em>fem>ly when needed.
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Importing <em>fem>rom builtin library when module with same name exists
Situation:
- There is a module in my project_<em>fem>older called calendar
- I would like to use the built-in Calendar class <em>fem>rom the Python libraries
- When I use <em>fem>rom calendar import Calendar it complains because it's trying to load <em>fem>rom my module.
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Visual Studio 2010 annoyingly opens documents in wrong MDI pane
Visual Studio's MDI is currently causing me a lot o<em>fem> <em>fem>rustration. Here is my basic layout:
5 Answers
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