Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

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() ...

Functions are the building blocks of Python programming. They let you organize your code, reduce repetition, and make your programs more readable and reusable. Whether you’re writing small scripts or ...

The importance of using reward-based methods to train dogs is widely known, yet some people still use aversive methods. By definition, both reward-based and aversive methods work to change behavior, ...

Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...

I tried "6-to-1" method for buying groceries to see if it'd save me money and make my life easier. The method focuses on picking up a few ingredients to make a mix of meals throughout the week. I ...

Do you get nervous and ramble during interviews? Or do you worry about what details to include and what to leave out when explaining your experience? Understanding ...

Teachers spend up to 29 hours a week doing nonteaching tasks: writing emails, grading, finding classroom resources, and carrying out other administrative work. They also have high stress levels and ...

Small talk has its uses, especially in the business world. It can help us suss each other out, establish a basic level of trust, or just fill the time while we’re waiting in line. But let’s be honest, ...

2.) The equation x^2 – 2 = 0 can be composed as the following three functions in terms of G: G(x) = 2/x G(x) = x^2 + x – 2 G(x) = (x+2)/(x+1) The original equation x^2 – 2 = 0 has a root of sqrt(2).