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How to convert an IPv4 address into a integer in C#?
... I see the issue. Repeated numbers such as 1.1.1.1, 2.2.2.2, 123.123.123.123 always yield the same result. For posterity, see updated fiddle: dotnetfiddle.net/aR6fhc
– Jesse
Mar 9 '18 at 18:30
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getting date format m-d-Y H:i:s.u from milliseconds
...es not work on all locales correctly. Some countries like Germany write "0,1234" or "0.1234" instead of ".1234", therefore your code gives following output for me: 2012-07-08 11:14:15.0.889342
– Daniel Marschall
Apr 18 at 13:14
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How to store a dataframe using Pandas
...
Pickle works good!
import pandas as pd
df.to_pickle('123.pkl') #to save the dataframe, df to 123.pkl
df1 = pd.read_pickle('123.pkl') #to load 123.pkl back to the dataframe df
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Splitting on first occurrence
...
>>> s = "123mango abcd mango kiwi peach"
>>> s.split("mango", 1)
['123', ' abcd mango kiwi peach']
>>> s.split("mango", 1)[1]
' abcd mango kiwi peach'
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Scratch还是App Inventor？低代码编程工具2026终极横评：谁才是真正的入门...
...球化，作品分享平台成熟
App Inventor 2：中文社区（如fun123.cn）本土化完善
维度：进阶路径
Scratch：→ Python/JavaScript
App Inventor 2：→ Python/Java/Kotlin
详细对比
场景1：给小学生做编程启蒙
如果你的孩子刚上小学，从来...
Preferred order of writing latitude & longitude tuples in GIS services
.... For example, my hometown of Eugene, Oregon is at approximately N 44.1, W 123.1. If in maps.google.com I enter 44.1 -123.1, it goes to Eugene. If I enter -123.1 44, it tells me it can't find it. Interestingly, though, if I enter 123.1 W 44 N, it figures it out and goes to Eugene, so there is some f...
C# using streams
...sfer the strings to and from the stream as bytes. So
myStreamWriter.Write(123);
will write "123" (three characters '1', '2' then '3') to the stream. If you're dealing with text files (e.g. html), StreamReader and StreamWriter are the classes you would use.
Whereas
myBinaryWriter.Write(123);
w...
Python's “in” set operator
...s, you need to use set operations like issubset():
>>> k
{'ip': '123.123.123.123', 'pw': 'test1234', 'port': 1234, 'debug': True}
>>> set('ip,port,pw'.split(',')).issubset(set(k.keys()))
True
>>> set('ip,port,pw'.split(',')) in set(k.keys())
False
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python capitalize first letter only
... you can use '2'.isdigit() to check for each character.
>>> s = '123sa'
>>> for i, c in enumerate(s):
... if not c.isdigit():
... break
...
>>> s[:i] + s[i:].capitalize()
'123Sa'
sha...
TypeError: got multiple values for argument
...ut it took me ages to realise that.
I had
self.myFunction(self, a, b, c='123')
but it should have been
self.myFunction(a, b, c='123')
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