I'm a software developer, and as such I often use an IDE to fulfill my goals. For those who don't know:
An integrated development environment (IDE) is a software application that provides comprehensive facilities to computer programmers for software development.
Sometimes while programming I find myself making certain errors. One of them is creating a variable (A name that holds a certain value) that is never used. An IDE can show a certain message and underline the error for me so that I notice it quickly and fix it.
I have been using multiple IDE's that have shown me the error shown above, but I just noticed something. In one IDE, the message is shown as "Unused expression", while the other says "Useless expression".
Which IDE is saying it right? Is it supposed to be "Useless" or "Unused"?