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App Inventor 2 实现导出Excel全方案总结 · App Inventor 2 中文网
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App Inventor 2 实现导出Excel全方案总结
App Inventor 2 实现导出Excel全方案总结
1、导出CSV格式数据
2、导出原生Excel：支持数据、文本、图片...
App Inventor 2 天气预报App开发 - 第三方API接入的通用方法 · App Inventor 2 中文网
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App Inventor 2 天气预报App开发 - 第三...
How do I compare two hashes?
...can compare hashes directly for equality:
hash1 = {'a' => 1, 'b' => 2}
hash2 = {'a' => 1, 'b' => 2}
hash3 = {'a' => 1, 'b' => 2, 'c' => 3}
hash1 == hash2 # => true
hash1 == hash3 # => false
hash1.to_a == hash2.to_a # => true
hash1.to_a == hash3.to_a # => false
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Remove all values within one list from another list? [duplicate]
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>>> a = range(1, 10)
>>> [x for x in a if x not in [2, 3, 7]]
[1, 4, 5, 6, 8, 9]
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How does the bitwise complement operator (~ tilde) work?
Why is it that ~2 is equal to -3? How does ~ operator work?
15 Answers
15
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What's the 'Ruby way' to iterate over two arrays at once
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277
>> @budget = [ 100, 150, 25, 105 ]
=> [100, 150, 25, 105]
>> @actual = [ 120, 1...
Python matplotlib multiple bars
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112
import matplotlib.pyplot as plt
from matplotlib.dates import date2num
import datetime
x = [
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Using python map and other functional tools
... different functions, but to access it directly from maptest:
foos = [1.0,2.0,3.0,4.0,5.0]
bars = [1,2,3]
def maptest(foo):
print foo, bars
map(maptest, foos)
With your original maptest function you could also use a lambda function in map:
map((lambda foo: maptest(foo, bars)), foos)
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How to delete multiple values from a vector?
... a vector like: a = c(1:10) and I need to remove multiple values, like: 2, 3, 5
8 Answers
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