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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
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App Inventor 2 拓展参考文档
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App Inventor 2 实现上传文件到服务器全方案总结 · App Inventor 2 中文网
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App Inventor 2 实现上传文件到服务器全方案总结
App Inventor 2 实现上传文件到服务器全方案总结
1、图片Base64化
2、通用（二级制）文件上...
MIT官方已升级至2.71版本，几乎就是仅增加一个全新主题 - App Inventor 2 ...
2.71 版本主要更新内容：Changes between nb196 and nb197 (July 7, 2024)
This is a component release which includes bugfixes and improvements. It includes a new Android MIT AI2 Companion versions 2.71 (from Google Play) and 2.71u (directly downloaded from MIT App Inventor).
Features:
Ne...
setup.py examples?
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edited Jul 24 '16 at 9:22
sudip
15399 bronze badges
answered Jan 19 '11 at 20:54
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Difference between signed / unsigned char [duplicate]
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answered Dec 2 '10 at 16:25
AnTAnT
283k3838 gold badges470470 silver badges714714 bronze badges
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Get the first item from an iterable that matches a condition
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In Python 2.6 or newer:
If you want StopIteration to be raised if no matching element is found:
next(x for x in the_iterable if x > 3)
If you want default_value (e.g. None) to be returned instead:
next((x for x in the_iterable ...
Is there “0b” or something similar to represent a binary number in Javascript
...xadecimal numbers in Javascript. For example, 0xFF stands for the number 255.
10 Answers
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Trying to SSH into an Amazon Ec2 instance - permission error
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29 Answers
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Python multiprocessing pool.map for multiple arguments
...as pool:
results = pool.starmap(merge_names, product(names, repeat=2))
print(results)
# Output: ['Brown & Brown', 'Brown & Wilson', 'Brown & Bartlett', ...
For earlier versions of Python, you'll need to write a helper function to unpack the arguments explicitly. If you wan...
What is “entropy and information gain”?
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Ashley 1 3 6 f
Brian 0 2 5 m
Caroline 1 4 8 f
David 0 2 5 m
The goal is to build a decision tree. An example of a tree would be:
length<7
| num-vowels<3: mal...