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How to convert index of a pandas dataframe into a column?
...
df1 = pd.DataFrame({"gi":[232,66,34,43],"ptt":[342,56,662,123]})
p = df1.index.values
df1.insert( 0, column="new",value = p)
df1
new gi ptt
0 0 232 342
1 1 66 56
2 2 34 662
3 3 43 123
...
Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
...debug parameters to see remote "Certificate chain" in logs, then grep the "CN" in truststore explicitly passed (instead of default) as follows, if not present, you need to add. ssllabs.com/ssltest/analyze.html will show if server side certs has incomplete chain, and includes intermediate certificati...
Merge pull request to a different branch than default, in Github
... to the pull request number. That is:
(Assuming the pull request number is 123)
Merge remote-tracking branch 'user/their-branch' into your-branch
refs #123 solving whatever...
So next time you visit your github issues/pull-requests page and check that particular pull request, you will see your mes...
Javascript and regex: split string and keep the separator
...
test('splitKeep', function () {
// String
deepEqual("1231451".splitKeep('1'), ["1", "231", "451"]);
deepEqual("123145".splitKeep('1', true), ["123", "145"]);
deepEqual("1231451".splitKeep('1', true), ["123", "145", "1"]);
deepEqual("hello man how are you...
How to SSH to a VirtualBox guest externally through a host? [closed]
...n an office network? Is it due to security or?
– mdo123
Aug 16 '17 at 18:02
1
Even knowing that ...
How to print a string in fixed width?
...
>>> print(f"{'123':<4}56789")
123 56789
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二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的编码。
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文章转自： 酷 壳 – CoolShell.cn
二维码 细节 原理
How to pass an array within a query string?
...a comma separated list of items:
let data = {
str: 'abc',
arr: ['abc', 123]
}
new URLSearchParams(data).toString(); // ?str=abc&arr=abc,123
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【App Inventor 2 数据可视化】使用柱状图和饼图收集数据 - App应用开发 - ...
...器查看），凑合着看吧~
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数据在行动1：使用柱...
Why are functions in Ocaml/F# not recursive by default?
Why is it that functions in F# and Ocaml (and possibly other languages) are not by default recursive?
6 Answers
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