Do not live with a poor heart. Look towards beautiful things, help the weak, and no matter how cold it is outside, we must always carry spring in our heart.

In programming, it is often necessary to control some form of state. This article summarizes several patterns for managing states.

To round a float value, adding 0.5 then casting to int is an amateur approach. Professionals use std::nearbyint.

Engineering is often subjective, and it should not be assumed that talent is easily replaceable.

When using ‘yum install’ and specifying a non-existent package name, it returns exit code 0. This article explains how to change this behavior.

I calculated the expected value of the cosine of a random variable following the standard normal distribution.