No fake news here, you really can program with musical notes if you want to!

Abstract: A regular expression (regex) is said to be vulnerable to the regex denial of service (ReDoS) attack if the worst-case running time of a matching algorithm on the regex is super-linear in the ...

You may know me from the Opinion pages of the print paper, where I have been an editor since 2017. Earlier this year I scrapped with Vice President JD Vance about free markets, which may have caught ...

Abstract: A Regular Expression, often abbreviated as Regex, are a sequence of characters that define a search pattern. An Non-deterministic Finite Automata (NFA) is a computational machine which can ...

Using the data shown, it is not clear the difference between using "X" vs. "^X" as both results are the same. With the ^ the search picks up the X at the beginning of the line at position 6. With no ^ ...

If you’re looking for easy grab-and-go breakfasts, yogurt is a great option. It’s widely available, relatively affordable, and is easy to customize based on your tastes. But if you’re not sure whether ...

In forecasting economic time series, statistical models often need to be complemented with a process to impose various constraints in a smooth manner. Systematically imposing constraints and retaining ...

Getting input from users is one of the first skills every Python programmer learns. Whether you’re building a console app, validating numeric data, or collecting values in a GUI, Python’s input() ...

Multiplication in Python may seem simple at first—just use the * operator—but it actually covers far more than just numbers. You can use * to multiply integers and floats, repeat strings and lists, or ...

Free Expression is a daily newsletter on American life, politics and culture published by the Opinion pages of The Wall Street Journal. We believe in democratic self-government and the freedom to make ...

In his decades-long career in tech journalism, Dennis has written about nearly every type of hardware and software. He was a founding editor of Ziff Davis’ Computer Select in the 1990s, senior ...