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图表组件 · App Inventor 2 中文网
...r2 相关性将通过 拟合系数 属性块报告。
注：此组件对AI伴侣要求最低版本为v2.70 (旧版本请扫码升级：帮助 -> AI伴侣信息)，编译为apk则不受限制安装后可正常运行。
属性
图表数据
要计算最佳拟合线的数...
Is there a way to get rid of accents and convert a whole string to regular letters?
...
I have an objection to this solution. Imagine input "æøåá". Current flattenToAscii creates result "aa.." where dots represent \u0000. That is not good. First question is - how to represent "unnormalizable" characters? Let's say it will be ?, or we can leave NULL char there, but...
Regular expression to match DNS hostname or IP Address?
...
Here: stackoverflow.com/questions/4645126/… - I explain that names that start with a digit are considered as valid as well. Also, only one dot is questionable issue. Would be great to have more feedback on that.
– BreakPhreak
Jan 10 '11 a...
AppInventor2 屏幕如何切换成横屏？ - App应用开发 - 清泛IT社区，为创新赋能！
设置Screen1的“屏幕方向”属性即可：
预览如下：
ai2Stater测试效果如下：
ai2Stater模拟器窗口无法横屏，但是Mumu模拟器及手机AI伴侣测试的话，则会自动横屏。
请问输入文件要往哪放? - App应用开发 - 清泛IT社区，为创新赋能！
...名诸如 "test.txt"，就是在这个目录下：（上面是AI伴侣的App目录，如果最终编译apk运行，则到 appinventor.ai_[账户名].[项目名] 目录下查看文件）理论上，读写方法都是这样写路径，如果运行有问题，请贴出具体的报错截图。...
How do I sort unicode strings alphabetically in Python?
...;>> import icu # pip install PyICU
>>> sorted(['a','b','c','ä'])
['a', 'b', 'c', 'ä']
>>> collator = icu.Collator.createInstance(icu.Locale('de_DE.UTF-8'))
>>> sorted(['a','b','c','ä'], key=collator.getSortKey)
['a', 'ä', 'b', 'c']
...
What does the ??!??! operator do in C?
...the possibility of if (x || y) { a[i] = '\0'; } looking like if (x öö y) ä aÄiÅ = 'Ö0'; å in the wrong charset.
– Ilmari Karonen
Oct 20 '11 at 13:36
9
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What's the equivalent of use-commit-times for git?
... no longer modified (Git 2.2.2+, January 2015): "git checkout - how can I maintain timestamps when switching branches?".)
The long answer was:
I think you're much better off just using multiple repositories instead, if this is something common.
Messing with timestamps is not going to work in gen...
Setting the correct encoding when piping stdout in Python
... you receive, and encode what you send.
# -*- coding: utf-8 -*-
print u"åäö".encode('utf-8')
Another didactic example is a Python program to convert between ISO-8859-1 and UTF-8, making everything uppercase in between.
import sys
for line in sys.stdin:
# Decode what you receive:
line ...
App Inventor 2 连接打印机（Printer），自定义打印的实现 - App Inventor ...
...安卓平台只能通过分享文件才能选择打印机App，而iOS版AI伴侣在分享消息时就可以直接预览打印消息内容，如下图:
iOS版分享消息
打印功能实现思路：
由于安卓平台分享消息的方式无法调出打印App，只能通过分享文...