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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...
App Inventor 2 中文网 · 升级日志
... 升级日志 项目指南 App Inventor 2 中文网 · 升级日志 240117 2024/01/17 全新 全新配色主题等您来探索，更有暗色主题可选，让您的代码更有格调！（设置入口：底部导航条最左边） 全...
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...
nonlocal keyword in Python 2.x
I'm trying to implement a closure in Python 2.6 and I need to access a nonlocal variable but it seems like this keyword is not available in python 2.x. How should one access nonlocal variables in closures in these versions of python?
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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...rray. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
7 Answers
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Write a function that returns the longest palindrome in a given string
I thought of a solution but it runs in O(n^2) time
22 Answers
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How to convert int[] into List in Java?
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20 Answers
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“for loop” with two variables? [duplicate]
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201
If you want the effect of a nested for loop, use:
import itertools
for i, j in itertools.prod...
Getting key with maximum value in dictionary?
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25 Answers
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LINQ with groupby and count
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412
After calling GroupBy, you get a series of groups IEnumerable<Grouping>, where each Groupi...