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Find the max of two or more columns with pandas
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You can get the maximum like this:
>>> import pandas as pd
>>> df = pd.DataFrame({"A": [1,2,3], "B": [-2, 8, 1]})
>>> df
A B
0 1 -2
1 2 8
2 3 1
>>> df[["A", "B"]]
A B
0 1 -2
1 2 8
2 3 1
>>> df[["A", "B"]].max(axis=1)
0...
PyPy — How can it possibly beat CPython?
...nted in RPython which is a statically typed subset of Python (the language and not the CPython interpreter). - Refer https://pypy.readthedocs.org/en/latest/architecture.html for details.
Q3. And what are the chances of a PyPyPy or PyPyPyPy beating their score?
That would depend on the implementati...
schema builder laravel migrations unique on two columns
...lso somehow missed the fact the second param is to manually name the index and I had an automatically generated index name which was too long. Thank you, man! +1
– Ciprian Mocanu
Feb 2 '16 at 9:04
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How to pass a function as a parameter in Java? [duplicate]
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Java 8 and above
Using Java 8+ lambda expressions, if you have a class or interface with only a single abstract method (sometimes called a SAM type), for example:
public interface MyInterface {
String doSomething(int param1, S...
If string is empty then return some default value
Often I need to check if some value is blank and write that "No data present" like that:
6 Answers
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Express res.sendfile throwing forbidden error
...then call res.sendfile. You can resolve the path with path.resolve beforehand.
var path = require('path');
res.sendFile(path.resolve('temp/index.html'));
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Eclipse, regular expression search and replace
... as part of the replace string when performing a regular expression search and replace?
5 Answers
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Why should I declare a virtual destructor for an abstract class in C++?
... abstract classes that function as interfaces? Please provide some reasons and examples why.
7 Answers
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sqlalchemy IS NOT NULL select
...s is a better solution because NULL is not a valid as the RHS of != in SQL and using isnot better conveys your intentions for what you want the generated statement to look like.
– Josh
Sep 2 '16 at 16:04
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How do I cast a variable in Scala?
...rred technique is to use pattern matching. This allows you to gracefully handle the case that the value in question is not of the given type:
g match {
case g2: Graphics2D => g2
case _ => throw new ClassCastException
}
This block replicates the semantics of the asInstanceOf[Graphics2D]...