Although I have written Python for several years, I am still not very familiar with its idioms. In particular, I don't quite understand how to compare and sort the objects in Python. That's the reason why I am writing this article.
The rest of this article consists of following sections …
I got an Android Nexus 7 (2013, Wi-Fi) device a short while ago. I attached
the device to my computer and tried to list the devices with adb
devices command. But, unfortunately, I got the following error message:
$ adb devices
List of devices attached
???????????? no permissions
In the following of …
Code coverage is a metric to show the code being untested. It can be considered as a hint to add more test cases. When we are writing C/C++, the most notable code coverage testing tool is gcov, which is a GCC built-in coverage testing tool. Besides, we can collect …
In some circumstances, we would like to ignore the files (or directories) under the Git repository base directory. How could we do this? For example, assume that we have a Git repository with following files:
out/bin/conv
preprocessed/out/gen-case1.h
preprocessed/out/gen-case2.h
preprocessed/input.txt
conv …I used to download the large files with wget because I can simply
resume the download tasks with -c option. This option will check
the size of the output file, and download the rest of the file from the server.
I can even restart the download task with a different …
C++11 introduced three new smart pointer class templates:
std::unique_ptr, std::shared_ptr, and std::weak_ptr.
These smart pointer class templates are designed to replace the old
std::auto_ptr smart pointer, which is known to have some defect and
deprecated now. In this post, I would like to give a …
Today I have encountered a problem: Given that there are multiple equivalent
keys in an instance of std::multimap, how could we list all of the
corresponding values? For example:
#include <map>
#include <iostream>
int main() {
std::multimap<int, int> xs;
xs.insert(std::make_pair(1, 12));
xs.insert(std …Waliki is a simple wiki app for Django. We can write wiki contents with reStructuredText and the contents will be stored in a Git repository. In this post, I would like to introduce the instructions to install Waliki.
First, install the related Ubuntu packages:
$ sudo apt-get install git …
