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Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu
I am running the 32bit version of Ubuntu 10.10 and trying to cross compile to a 64 bit target. Based on my research, I have installed the g++-multilib package.
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What is the meaning of “non temporal” memory accesses in x86
...to be seen by other processors in a timely fashion.
When data is produced and not (immediately) consumed again, the fact that memory store operations read a full cache line first and then modify the cached data is detrimental to performance. This operation pushes data out of the caches which might ...
Python ValueError: too many values to unpack [duplicate]
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self.materials is a dict and by default you are iterating over just the keys (which are strings).
Since self.materials has more than two keys*, they can't be unpacked into the tuple "k, m", hence the ValueError exception is raised.
In Python 2.x, t...
What is Objective C++? [closed]
What is Objective C++ and can I use this language in Xcode?
3 Answers
3
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Compare if two variables reference the same object in python
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That’s what is is for: x is y returns True if x and y are the same object.
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How to deal with persistent storage (e.g. databases) in Docker
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Docker 1.9.0 and above
Use volume API
docker volume create --name hello
docker run -d -v hello:/container/path/for/volume container_image my_command
This means that the data-only container pattern must be abandoned in favour of the ne...
How to add items to a spinner in Android?
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XML file:
<Spinner
android:id="@+id/Spinner01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Java file:
public class SpinnerExample extends Activity {
@Override
public void onCreate(Bundle sav...
Cost of exception handlers in Python
...nt division or modulo by zero
So, as expected, not having any exception handler is slightly faster (but blows up in your face when the exception happens), and try/except is faster than an explicit if as long as the condition is not met.
But it's all within the same order of magnitude and unlikel...
Officially, what is typename for?
... week, I was declaring two iterators as members of another templated class and I had to do this)...
8 Answers
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Why do you need explicitly have the “self” argument in a Python method?
...quote Peters' Zen of Python. "Explicit is better than implicit."
In Java and C++, 'this.' can be deduced, except when you have variable names that make it impossible to deduce. So you sometimes need it and sometimes don't.
Python elects to make things like this explicit rather than based on a r...