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界面布局组件 · App Inventor 2 中文网
...路 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { text: window.location.href + "?f=share", //...
Transposing a 2D-array in JavaScript
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You could use underscore.js
_.zip.apply(_, [[1,2,3], [1,2,3], [1,2,3]])
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Creating dataframe from a dictionary where entries have different lengths
...k]) for k, v in data.items()], axis=1)
Use pandas.DataFrame and itertools.zip_longest
For iterables of uneven length, zip_longest fills missing values with the fillvalue.
The zip generator needs to be unpacked, because the DataFrame constructor won't unpack it.
from itertools import zip_longest
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How to parse freeform street/postal address out of text, and into components
... also contains a street address (with secondary/unit number) and a 5-digit ZIP code, which is enough to identify an address.
Number 3 is a complete post office box format, as it contains a ZIP code.
Number 4 is also complete because the ZIP code is unique, meaning that a private entity or corporat...
Create a dictionary with list comprehension
...1) consumed from any iterable yielding pairs of keys/vals
dict(pairs)
2) "zip'ped" from two separate iterables of keys/vals
dict(zip(list_of_keys, list_of_values))
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Merge and interleave two arrays in Ruby
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You can do that with:
a.zip(s).flatten.compact
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How to use Python's pip to download and keep the zipped files for a package?
...ommand to download a package (and its dependencies), but keep all of the zipped files that get downloaded (say, django-socialregistration.tar.gz) - is there a way to do that?
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云数据及Firebase组件简介 · App Inventor 2 中文网
...访问。 此外，如果其他开发人员使用您的应用程序源代码（AIA 文件），生成的应用程序将不会与您的应用程序共享变量，即使这两个应用程序具有相同的名称。
您还可以指定 valueIfTagNotThere，如果给定标签下没有存储任何内容...
How to take the first N items from a generator or list in Python? [duplicate]
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In my taste, it's also very concise to combine zip() with xrange(n) (or range(n) in Python3), which works nice on generators as well and seems to be more flexible for changes in general.
# Option #1: taking the first n elements as a list
[x for _, x in zip(xrange(n), gen...
Iterate a list as pair (current, next) in Python
... s3), ..."
a, b = itertools.tee(iterable)
next(b, None)
return zip(a, b)
For Python 2, you need itertools.izip instead of zip:
import itertools
def pairwise(iterable):
"s -> (s0,s1), (s1,s2), (s2, s3), ..."
a, b = itertools.tee(iterable)
next(b, None)
return iter...