Check [here[(https://github.com/dclong/cearn/tree/master/lambda) for illustrative examples for the following discussions.
When capture variables,
you can define new variables in the [] of a lambda expression.
For example,
if a lambda function need the sum of two double variable x and y,
you …
The kernel of Linux is usually very stable, but the existing free desktop environments are craps. Amongs these desktop environments I tried (Gnome, Xfce, LXDE and so on), none is even close to the desktop environments in Windows and Mac. I do not require desktop environments in Linux to be …
{} is more powerful than () and thus is preferred over ().
You should use always use {} except for a few cases where () is necessary.
For example,
if you want to create a vector of length 1000,
you have to use vector<int>(1000);
instead of
vector<int> {1000};
which create a vector …
GSL is an advance C/C++ library that is widely used. To install GSL, you can download the source file and following instruction in the included README and INSTALL document. For Unix/Linux users, the GSL library is often availabe in the repository. For example, you can use the following …
I talked about an interesting problem in this post. I had onsite-inteviews from Wolfram at the end of April this year, and I decided to talk how to solve the problem using Mathematica. I did some research and realized that the problem is a well-known one which is called the …
For many computers and laptops installed with Linux desktops, you can use shortcuts (usually Fn + Brightness_keys) to adjust screen brightness. This does not work for some laptops. Another way to adjust screen brightness is to use the following command.
sudo setpci -s 00:02.0 F4.B=brightness_value
The value …