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Class with Object as a parameter
...rties and super do not work with classic classes.
In Python2 it is a good idea to make all classes new-style classes. (Though a lot of classes in the standard library are still classic classes, for the sake of backward-compatibility.)
In general, in a statement such as
class Foo(Base1, Base2):
...
Why is there no Constant feature in Java?
I was trying to identify the reason behind constants in Java
I have learned that Java allows us to declare constants by using final keyword.
...
HTTP Basic Authentication - what's the expected web browser experience?
...
To help everyone avoid confusion, I will reformulate the question in two parts.
First : "how can make an authenticated HTTP request with a browser, using BASIC auth?".
In the browser you can do a http basic auth first by waiting the prompt to ...
Difference between os.getenv and os.environ.get
... os.putenv is broken, so you should default to os.environ.get simply to avoid the way os.getenv encourages you to use os.putenv for symmetry.
os.putenv changes the actual OS-level environment variables, but in a way that doesn't show up through os.getenv, os.environ, or any other stdlib way of insp...
Twitter bootstrap scrollable table
...
Did this actually work? I tried this and it had no effect at all.
– cjstehno
May 6 '13 at 21:04
8
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What are Transient and Volatile Modifiers?
...d make sense in other contexts, so there is some justification for not forbidding it outright.)
The volatile modifier tells the JVM that writes to the field should always be synchronously flushed to memory, and that reads of the field should always read from memory. This means that fields marked a...
View a file in a different Git branch without changing branches
...nated:
git show branchA~10:fileA branchB^^:fileB
You do not have to provide the full path to the file, relative paths are acceptable e.g.:
git show branchA~10:../src/hello.c
If you want to get the file in the local directory (revert just one file) you can checkout:
git checkout somebranch^^^ ...
How to pipe input to a Bash while loop and preserve variables after loop ends
...ion this in the question. AFAIK, you can do a return from within these inside a function.
Bash also provides the shopt builtin and one of its many options is:
lastpipe
If set, and job control is not active, the shell runs the last command of a pipeline not executed in the background in the curren...
Efficient way to apply multiple filters to pandas DataFrame or Series
... col2
1 1 11
If you want to write helper functions for this, consider something along these lines:
In [14]: def b(x, col, op, n):
return op(x[col],n)
In [15]: def f(x, *b):
return x[(np.logical_and(*b))]
In [16]: b1 = b(df, 'col1', ge, 1)
In [17]: b2 = b(df, ...
How to get the parents of a Python class?
...
considering an object x, we can get the method resolution order with the call type(x).mro() we can consider if x has ClassX as a base class with: ClassX in type(x).mro()
– 648trindade
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